Clausen, J. V., Crama, Y., Lusby, R., Rodriguez-Heck, E., & Ropke, S. (May 2024). Solving unconstrained binary polynomial programs with limited reach: Application to low autocorrelation binary sequences. Computers and Operations Research, 165, 106586. doi:10.1016/j.cor.2024.106586 |
Clavijo Lopez, C. J., Crama, Y., Pironet, T., & Semet, F. (2024). Multi-period distribution networks with purchase commitment contracts. European Journal of Operational Research, 312 (2), 556-572. doi:10.1016/j.ejor.2023.07.007 |
Crama, Y. (03 July 2023). Graph and optimization models for kidney exchanges [Paper presentation]. GO XI - International Colloquium on Graphs and Optimization 2023, Spa, Belgium. |
Baratto, M., Crama, Y., Pedroso, J. P., & Viana, A. (2023). Local stability in kidney exchange programs. ORBi-University of Liège. https://orbi.uliege.be/handle/2268/304478. |
Crama, Y. (2023). Gérer, c'est décider [Paper presentation]. Université des Champs, Vielsalm, Belgium. |
Crama, Y. (09 January 2023). Old and new algorithms for polynomial unconstrained optimization problems in binary variables [Paper presentation]. NUMA Study Day 2023, Gand, Belgium. |
Baratto, M., & Crama, Y. (2023). Cycle Selections. Discrete Applied Mathematics, 335, 4-24. doi:10.1016/j.dam.2022.07.005 |
Baratto, M., Crama, Y., Pedroso, J. P., & Ana, V. (13 September 2022). Locally Stable Exchanges - Conference ORBEL36 [Paper presentation]. ORBEL36, Gent, Belgium. |
Crama, Y., Elloumi, S., Lambert, A., & Rodriguez-Heck, E. (2022). Quadratization and convexification in polynomial binary optimization. ORBi-University of Liège. https://orbi.uliege.be/handle/2268/295296. |
Smeulders, B., Bartier, V., Crama, Y., & Spieksma, F. C. R. (2022). Recourse in Kidney Exchange Programs. INFORMS Journal on Computing, 34 (2), 1191-1206. doi:10.1287/ijoc.2021.1099 |
Baratto, M., & Crama, Y. (11 June 2021). Selecting directed cycles: a polyhedral study [Paper presentation]. ECCO 2021. |
Baratto, M., & Crama, Y. (21 May 2021). Selecting directed cycles, a polyhedral study [Paper presentation]. Seminar in the Combinatorial Optimization group at the Eindhoven University of Technology. |
Baratto, M., & Crama, Y. (20 April 2021). Selecting directed cycles: a polyhedral study [Poster presentation]. 3rd IMA and OR Society Conference on Mathematics of Operational Research (Online event). |
Crama, Y., Grabisch, M., & Martello, S. (2021). 4OR comes of age: Editorial note. 4OR: A Quarterly Journal of Operations Research, 19, 1-13. doi:10.1007/s10288-021-00475-0 |
Crama, Y. (2020). Quand les maths nous transportent [Paper presentation]. Pi Day 2020. |
Boros, E., Crama, Y., & Rodriguez Heck, E. (2020). Compact quadratizations for pseudo-Boolean functions. Journal of Combinatorial Optimization, 39, 687-707. doi:10.1007/s10878-019-00511-0 |
Paquay, C., Crama, Y., & Pironet, T. (2020). Recovery management for a dial-a-ride system with real-time disruptions. European Journal of Operational Research, 280, 253-269. doi:10.1016/j.ejor.2019.08.006 |
Dokka, T., Crama, Y., Duvillié, G., & Spieksma, F. C. R. (2019). Column generation algorithms for the wafer-to-wafer integration problem. ORBi-University of Liège. https://orbi.uliege.be/handle/2268/241939. |
François, V., Arda, Y., & Crama, Y. (December 2019). Adaptive large neighborhood search for multi-trip vehicle routing with time windows. Transportation Science, 53 (6), 1706-1730. doi:10.1287/trsc.2019.0909 |
Crama, Y. (September 2019). Of (hyper)graphs and functions of binary variables: Old and recent results [Paper presentation]. Tribute to Frédéric Maffray, Grenoble, France. |
Crama, Y., Gendron, B., & Ries, B. (May 2019). Tenth International Colloquium on Graphs and Optimization (GO X), 2016. Discrete Applied Mathematics, 261, 1-354. doi:10.1016/j.dam.2019.02.026 |
Crama, Y., & Pironet, T. (04 January 2019). Vehicle allocation problem with uncertain transportation requests over a multi-period rolling horizon. Logistics Research, 12 (1), 1-22. doi:10.23773/2019_1 |
Bartier, V., Smeulders, B., Crama, Y., & Spieksma, F. C. R. (2019). Recourse in Kidney Exchange Programs. ORBi-University of Liège. https://orbi.uliege.be/handle/2268/231958. |
Brauner, N., Crama, Y., Delaporte, E., Jost, V., & Libralesso, L. (2019). Do balanced words have a short period? Theoretical Computer Science, 793, 169-180. doi:10.1016/j.tcs.2019.06.017 |
Buchheim, C., Crama, Y., & Rodriguez Heck, E. (2019). Berge-acyclic multilinear 0-1 optimization problems. European Journal of Operational Research, 273, 102-107. doi:10.1016/j.ejor.2018.07.045 |
Paquay, C., Crama, Y., & Pironet, T. (2019). A reactive algorithm for a dial-a-ride problem with real-time disruptions [Paper presentation]. ORBEL 33, Hasselt, Belgium. |
Smeulders, B., Crama, Y., & Spieksma, F. C. R. (2019). Revealed preference theory: An algorithmic outlook. European Journal of Operational Research, 272, 803-815. doi:10.1016/j.ejor.2018.04.026 |
Crama, Y., Grabisch, M., & Martello, S. (2018). Editorial: Sweet sixteen. 4OR: A Quarterly Journal of Operations Research, 1-13. doi:10.1007/s10288-018-0373-7 |
Boros, E., Crama, Y., & Rodriguez Heck, E. (04 January 2018). Quadratizations of symmetric pseudo-Boolean functions: sub-linear bounds on the number of auxiliary variables [Paper presentation]. International Symposium on Artificial Intelligence and Mathematics (ISAIM 2018), Fort Lauderdale, United States. |
Crama, Y., Rezaei Sadrabadi, M., Savelsbergh, M., & Van Woensel, T. (2018). Stochastic Inventory Routing for Perishable Products. Transportation Science, 52 (3), 526-546. doi:10.1287/trsc.2017.0799 |
Paquay, C., Crama, Y., & Pironet, T. (2018). Dial-a-ride with real-time disruptions [Paper presentation]. OR 2018, Bruxelles, Belgium. |
Paquay, C., Crama, Y., & Pironet, T. (2018). Dial-a-ride with real-time disruptions [Paper presentation]. 29th European Conference on Operational Research, Valencia, Spain. |
Anthony, M., Boros, E., Crama, Y., & Gruber, A. (2017). Quadratic reformulations of nonlinear binary optimization problems. Mathematical Programming, 162, 115-144. doi:10.1007/s10107-016-1032-4 |
Crama, Y., & Rodriguez Heck, E. (2017). A class of valid inequalities for multilinear 0-1 optimization problems. Discrete Optimization, 25, 28-47. doi:10.1016/j.disopt.2017.02.001 |
Crama, Y., Grabisch, M., & Martello, S. (December 2016). Editorial: A brand new cheating attempt: a case of usurped identity. 4OR: A Quarterly Journal of Operations Research, 14, 333-336. doi:10.1007/s10288-016-0329-8 |
François, V., Arda, Y., Crama, Y., & Laporte, G. (01 December 2016). Large neighborhood search for multi-trip vehicle routing. European Journal of Operational Research, 255 (2), 422-441. doi:10.1016/j.ejor.2016.04.065 |
Talla Nobibon, F., Cherchye, L., Crama, Y., Demuynck, T., De Rock, B., & Spieksma, F. C. R. (November 2016). Revealed preference tests of collectively rational consumption behavior: formulations and algorithms. Operations Research, 64 (6), 1197–1216. doi:10.1287/opre.2016.1527 |
Crama, Y. (05 September 2016). Balanced words and related concepts: applications and complexity issues [Paper presentation]. 16th Mons Theoretical Computer Science Days. |
François, V., Arda, Y., Crama, Y., & Laporte, G. (10 February 2016). Recherche à voisinage large pour le problème de tournées de véhicules à voyages multiples [Paper presentation]. ROADEF 2016 - 17e Conférence Annuel de la Société Française de Recherche Opérationnelle et d'Aide à la Décision, Compiègne, France. |
Anthony, M., Boros, E., Crama, Y., & Gruber, A. (2016). Quadratization of symmetric pseudo-Boolean functions. Discrete Applied Mathematics, 203, 1-12. doi:10.1016/j.dam.2016.01.001 |
François, V., Arda, Y., Crama, Y., & Laporte, G. (2015). Large neighborhood search for multi-trip vehicle routing. (Version 30/11/2015). ORBi-University of Liège. https://orbi.uliege.be/handle/2268/187309. |
Michelini, S., Arda, Y., Crama, Y., & Küçükaydin, H. (10 June 2015). Exact and Heuristic Solution Methods for a VRP with Time Windows and Variable Service Start Time [Paper presentation]. VeRoLog 2015 - Annual Workshop of the EURO Working Group on Vehicle Routing and Logistics optimization, Vienna, Austria. |
Marchetti-Spaccamela, A., Crama, Y., Goossens, D., Leus, R., Schyns, M., & Spieksma, F. (Eds.). (2015). Proceedings of the 12th Workshop on Models and Algorithms for Planning and Scheduling Problems. KU Leuven. |
Pironet, T., & Crama, Y. (01 June 2015). Multi-period vehicle assignment problem with stochastic transportation order availability [Paper presentation]. Odysseus 2015 Sixth International Workshop on Freight Transportation and Logistics, Ajaccio, France. |
Crama, Y. (2015). Quand les maths nous transportent [Paper presentation]. Matinée scientifique. |
Michelini, S., Arda, Y., Crama, Y., & Küçükaydin, H. (05 February 2015). Exact and Heuristic Solution Methods for a VRP with Time Windows and Variable Service Start Time [Paper presentation]. ORBEL29 - 29th annual conference of the Belgian Operational Research Society. |
Crama, Y., Rezaei Sadrabadi, M., & Van Woensel, T. (2015). A branch-and-price algorithm for 2-period vehicle routing problems. ORBi-University of Liège. https://orbi.uliege.be/handle/2268/175663. |
Crama, Y. (20 November 2014). Boolean Functions for Classification: Logical Analysis of Data [Paper presentation]. DA2PL 2014 from Multicriteria Decision Aid to Preference Learning, Paris, France. |
Crama, Y. (2014). Quand les maths nous transportent [Paper presentation]. Matinée scientifique. |
Arda, Y., Crama, Y., Kronus, D., Pironet, T., & Van Hentenryck, P. (August 2014). Multi-period vehicle loading with stochastic release dates. EURO Journal on Transportation and Logistics, 3 (2), 93-119. doi:10.1007/s13676-013-0035-z |
Crama, Y., & Rodriguez Heck, E. (2014). Short Prime Quadratizations of Cubic Negative Monomials. ORBi-University of Liège. https://orbi.uliege.be/handle/2268/170649. |
Küçükaydın, H., Arda, Y., & Crama, Y. (2014). Optimization of the service start time for an elementary shortest path problem with time windows. ORBi-University of Liège. https://orbi.uliege.be/handle/2268/170446. |
Dokka, T., Crama, Y., & Spieksma, F. C. R. (2014). Multi-Dimensional Vector Assignment Problems. Discrete Optimization, 14, 111-125. doi:10.1016/j.disopt.2014.08.005 |
Bay, M., Crama, Y., & Rigo, P. (01 July 2013). A global optimization method for naval structure op- timization [Paper presentation]. EURO INFORMS 2013 - 26th European Conference on Operational Research, Roma, Italy. |
Dokka, T., Crama, Y., & Spieksma, F. C. R. (2013). Approximation Algorithms for Multi-Dimensional Vector Assignment Problems. ORBi-University of Liège. https://orbi.uliege.be/handle/2268/147977. |
Crama, Y. (April 2013). Quadratization of symmetric pseudo-Boolean functions [Paper presentation]. Boolean Seminar Liblice 2013, Liblice, Czechia. |
Arda, Y., Crama, Y., & François, V. (13 February 2013). An adaptive large neighborhood search for a vehicle routing problem with multiple trips and driver shifts [Paper presentation]. ROADEF 2013 - 14e Congrès Annuel de la Société Française de Recherche Opérationnelle at d'Aide à la Décision, Troyes, France. |
Arda, Y., Crama, Y., & François, V. (07 February 2013). An adaptive large neighborhood search for a vehicle routing problem with multiple trips and driver shifts [Paper presentation]. ORBEL 27 - 27th annual conference of the Belgian Operational Research Society, Kortrijk, Belgium. |
Crama, Y., & Leruth, L. (2013). Power indices and the measurement of control in corporate structures. International Game Theory Review, 15, 1340017. doi:10.1142/S0219198913400173 |
Arda, Y., Crama, Y., Kucukaydin, H., & Talla Nobibon, F. (2012). A Rich Vehicle Routing Problem with Multiple Trips and Driver Shifts [Paper presentation]. VeRoLog 2012 - Annual Workshop of the EURO Working Group on Vehicle Routing and Logistics optimization, Bologna, Italy. |
Crama, Y. (November 2011). Boolean methods in operations research and related areas [Paper presentation]. INFORMS Annual Meeting, Charlotte, NC, United States. |
Amand, G., Arda, Y., Crama, Y., Kronus, D., & Pironet, T. (07 April 2011). Multiperiod vehicle loading optimization with stochastic supply [Paper presentation]. UGR GreatRoad: Working Group HEC-ULg meeting, Liège, Belgium. |
Boros, E., Crama, Y., De Werra, D., Hansen, P., & Maffray, F. (2011). The Mathematics of Peter L. Hammer (1936-2006): Graphs, Optimization, and Boolean Models. In E. Boros, Y. Crama, D. De Werra, P. Hansen, F. Maffray, ... B. Simeone (Eds.), The Mathematics of Peter L. Hammer (1936-2006): Graphs, Optimization, and Boolean Models (pp. 1-18). Springer. doi:10.1007/s10479-011-0913-4 |
Boros, E., Crama, Y., de Werra, D., Hansen, P., Maffray, F., & Simeone, B. (Eds.). (2011). The Mathematics of Peter L. Hammer (1936-2006): Graphs, Optimization, and Boolean Models. Annals of Operations Research, 188. |
Boros, E., Crama, Y., Hammer, P. L., Ibaraki, T., Kogan, A., & Makino, K. (2011). Logical Analysis of Data: Classification with justification. Annals of Operations Research, 188, 33-61. doi:10.1007/s10479-011-0916-1 |
Crama, Y., & Hammer, P. L. (2011). Boolean Functions: Theory, Algorithms, and Applications. New York, United States - New York: Cambridge University Press. |
Bay, M., Crama, Y., Langer, Y., & Rigo, P. (September 2010). Space and time allocation in a shipyard assembly hall. Annals of Operations Research, 179 (1), 57-76. doi:10.1007/s10479-008-0461-8 |
Amand, G., Arda, Y., Crama, Y., Kronus, D., & Pironet, T. (29 January 2010). Vehicle loading optimization with stochastic supply [Paper presentation]. ORBEL 24 - 24th annual conference of the Belgian Operational Research Society, Liège, Belgium. |
Crama, Y., & Hammer, P. L. (Eds.). (2010). Boolean Models and Methods in Mathematics, Computer Science, and Engineering. New York, United States - New York: Cambridge University Press. |
Bay, M., Crama, Y., & Rigo, P. (2009). Local search heuristics for large-scale discrete structural optimization with expensive black-box evaluations. Liège, Belgium: ULg - Université de Liège. https://orbi.uliege.be/handle/2268/62667 |
Crama, Y., Leruth, L., & Wang, S. (2009). A Markov chain model of power indices in corporate structures. ORBi-University of Liège. https://orbi.uliege.be/handle/2268/178393. |
Adem, J., Crama, Y., Gochet, W., & Spieksma, F. C. R. (2008). Counting and enumerating aggregate classifiers. Discrete Applied Mathematics, 156 (3), 2459-2468. doi:10.1016/j.dam.2008.01.017 |
Boros, E., Brualdi, R., Crama, Y., & Hoffman, A. (2008). Geršgorin variations III: On a theme of Brualdi and Varga. Linear Algebra and its Applications, 428, 14-19. doi:10.1016/j.laa.2007.10.003 |
Chapelle, A., Crama, Y., Hübner, G., & Peters, J.-P. (2008). Practical methods for measuring and managing operational risk in the financial sector: A clinical study. Journal of Banking and Finance, 32, 1049-1061. doi:10.1016/j.jbankfin.2007.09.017 |
Crama, Y., Moonen, L. S., Spieksma, F. C., & Talloen, E. (16 October 2007). The tool switching problem revisited. European Journal of Operational Research, 182 (2), 952-957. doi:10.1016/j.ejor.2006.07.028 |
Crama, Y., & Leruth, L. (01 May 2007). Control and voting power in corporate networks: Concepts and computational aspects. European Journal of Operational Research, 178 (3), 879-893. doi:10.1016/j.ejor.2006.02.020 |
Bay, M., Crama, Y., Richir, T., & Rigo, P. (2007). A mixed-integer heuristic for the structural optimization of a cruise ship. In COMPIT 2007 , Cortona, Italy. |
Boros, E., Crama, Y., & Simeone, B. (April 2007). Peter Ladislaw Hammer (1936-2006). 4OR: A Quarterly Journal of Operations Research, 5 (1), 1-4. doi:10.1007/s10288-007-0034-8 |
Brauner, N., Crama, Y., Grigoriev, A., & van de Klundert, J. (February 2007). Multiplicity and complexity issues in contemporary production scheduling. Statistica Neerlandica, 61 (1), 75-91. doi:10.1111/j.1467-9574.2007.00362.x |
Langer, Y., Bay, M., Crama, Y., Bair, F., Caprace, J.-D., & Rigo, P. (July 2005). Optimization of Surface Utilization Using Heuristic Approaches. Ship Technology Research, 52 (3), 141-147. |
Brauner, N., Crama, Y., Grigoriev, A., & van de Klundert, J. (May 2005). A framework for the complexity of high-multiplicity scheduling problems. Journal of Combinatorial Optimization, 9 (3), 313-323. doi:10.1007/s10878-005-1414-7 |
Langer, Y., Bay, M., Crama, Y., Bair, F., Caprace, J.-D., & Rigo, P. (2005). Optimization of Surface Allocation using Heuristic Approaches. In COMPIT 2005 , Hambourg, Germany (Edt V Bertram, pp. 9). |
Schyns, M., Crama, Y., & Hübner, G. (2005). Grafting Information in Scenario Trees: Application to Option Prices. ORBi-University of Liège. https://orbi.uliege.be/handle/2268/117269. |
Alexe, G., Alexe, S., Crama, Y., Foldes, S., Hammer, P. L., & Simeone, B. (30 December 2004). Consensus algorithms for the generation of all maximal bicliques. Discrete Applied Mathematics, 145 (1 Sp. Iss. SI), 11-21. doi:10.1016/j.dam.2003.09.004 |
Crama, Y., Pascual, R., & Torres, A. (01 December 2004). Optimal procurement decisions in the presence of total quantity discounts and alternative product recipes. European Journal of Operational Research, 159 (2), 364-378. doi:10.1016/j.ejor.2003.08.021 |
Brauner, N., & Crama, Y. (05 January 2004). The maximum deviation just-in-time scheduling problem. Discrete Applied Mathematics, 134 (1-3), 25-50. doi:10.1016/S0166-218X(03)00222-1 |
Crama, Y., & Schyns, M. (01 November 2003). Simulated annealing for complex portfolio selection problems. European Journal of Operational Research, 150 (3), 546-571. doi:10.1016/S0377-2217(02)00784-1 |
Crama, Y., Leruth, L., Renneboog, L., & Urbain, J.-P. (2003). Corporate control concentration measurement and firm performance. In J. A. Batten & T. A. Fetherston (Eds.), Social Responsibility: Corporate Governance Issues (pp. 123-149). Elsevier. |
Crama, Y., van de Klundert, J., & Spieksma, F. C. (15 November 2002). Production planning problems in printed circuit board assembly. Discrete Applied Mathematics, 123 (1-3), 339-361. doi:10.1016/S0166-218X(01)00345-6 |
Crama, Y., & Hammer, P. L. (2002). Pseudo-Boolean optimization. In M. G. C. Resende & P. M. Pardalos (Ed.), Handbook of Applied Optimization (pp. 445-450). Oxford University Press. |
Crama, Y., Pochet, Y., & Wera, Y. (2001). A discussion of production planning approaches in the process industry. ORBi-University of Liège. https://orbi.uliege.be/handle/2268/217621. |
Crama, Y., Kats, V., Van de Klundert, J., & Levner, E. (2000). Cyclic scheduling in robotic flowshops. Annals of Operations Research, 96, 97-124. doi:10.1023/A:1018995317468 |
Crama, Y., & Van de Klundert, J. (1999). Worst-case performance of approximation algorithms for tool management problems. Naval Research Logistics, 46, 445-462. doi:10.1002/(SICI)1520-6750(199908)46:5<445::AID-NAV1>3.0.CO;2-R |
Crama, Y., & Van de Klundert, J. (1999). Cyclic scheduling in 3-machine robotic flow shops. Journal of Scheduling, 2, 35-54. doi:10.1002/(SICI)1099-1425(199901/02)2:1<35::AID-JOS15>3.0.CO;2-J |
Crama, Y. (1997). Combinatorial optimization models for production scheduling in automated manufacturing systems. European Journal of Operational Research, 99, 136-153. doi:10.1016/S0377-2217(96)00388-8 |
Crama, Y., Dupont, L., & Finke, G. (1997). Recherche opérationnelle et gestion de la production. Nouvelles de la Science et des Technologies, 15, 37-45. |
Crama, Y., Ekin, O., & Hammer, P. L. (1997). Variable and term removal from Boolean formulae. Discrete Applied Mathematics, 75, 217-230. doi:10.1016/S0166-218X(96)00028-5 |
Crama, Y., Flippo, O. E., Van de Klundert, J., & Spieksma, F. C. R. (1997). The assembly of printed circuit boards: A case with multiple machines and multiple board types. European Journal of Operational Research, 98, 457-472. doi:10.1016/S0377-2217(96)00228-7 |
Crama, Y., & Ibaraki, T. (1997). Hitting or avoiding balls in Euclidean space. Annals of Operations Research, 69, 47-64. doi:10.1023/A:1018901600127 |
Crama, Y., & Van de Klundert, J. (1997). Robotic flowshop scheduling is strongly NP-complete. In W. K. Klein Haneveld, O. J. Vrieze, ... L. C. M. Kallenberg (Eds.), Ten Years LNMB (pp. 277-286). Amsterdam, Netherlands: CWI. |
Crama, Y., & Van de Klundert, J. (1997). Cyclic scheduling of identical parts in a robotic cell. Operations Research, 45, 952-965. doi:10.1287/opre.45.6.952 |
Crama, Y., Flippo, O. E., Van de Klundert, J., & Spieksma, F. C. R. (1996). The component retrieval problem in printed circuit board assembly. International Journal of Flexible Manufacturing Systems, 8, 287-312. doi:10.1007/BF00170016 |
Bandelt, H.-J., Crama, Y., & Spieksma, F. C. R. (1994). Approximation algorithms for multi-dimensional assignment problems with decomposable costs. Discrete Applied Mathematics, 49, 25-50. doi:10.1016/0166-218X(94)90199-6 |
Crama, Y., & Van de Klundert, J. (1994). Approximation algorithms for integer covering problems via greedy column generation. RAIRO: Recherche Opérationnelle, 28, 283-302. |
Crama, Y., Loebl, M., & Poljak, S. (1992). A decomposition of strongly unimodular matrices into incidence matrices of digraphs. Discrete Mathematics, 102, 143-147. doi:10.1016/0012-365X(92)90048-K |
Crama, Y., & Spieksma, F. C. R. (1992). The complexity of scheduling short tasks with few starting times. ORBi-University of Liège. https://orbi.uliege.be/handle/2268/138861. |
Boros, E., Crama, Y., & Hammer, P. L. (1990). Upper-bounds for quadratic 0-1 maximization. Operations Research Letters, 9, 73-79. doi:10.1016/0167-6377(90)90044-6 |
Crama, Y., Hansen, P., & Jaumard, B. (1990). The basic algorithm for pseudo-Boolean programming revisited. Discrete Applied Mathematics, 29, 171-185. doi:10.1016/0166-218X(90)90142-Y |
Crama, Y., & Hammer, P. L. (1989). Bimatroidal independence systems. Zeitschrift für Operations-Research, 33, 149-165. doi:10.1007/BF01423645 |
Crama, Y., Hammer, P. L., & Holzman, R. (1989). A characterization of a cone of pseudo-Boolean functions via supermodularity-type inequalities. In P. Kall, J. Kohlas, W. Popp, ... C. A. Zehnder (Eds.), Quantitative Methoden in den Wirtschaftswissenschaften (pp. 53-55). Berlin Heidelberg, Germany: Springer-Verlag. doi:10.1007/978-3-642-74306-1 |
Crama, Y., & Ibaraki, T. (1988). Cause-effect relationships and partially defined Boolean functions. Annals of Operations Research, 16, 299-326. doi:10.1007/BF02283750 |
Crama, Y. (1987). Dualization of regular boolean functions. Discrete Applied Mathematics, 16, 79-85. doi:10.1016/0166-218X(87)90056-4 |
Crama, Y., Hammer, P. L., Jaumard, B., & Simeone, B. (1987). Product form parametric representation of the solutions to a quadratic boolean equation. RAIRO: Recherche Opérationnelle, 21, 287-306. doi:10.1051/ro/1987210402871 |
Crama, Y., Hammer, P. L., & Ibaraki, T. (1986). Strong unimodularity for matrices and hypergraphs. Discrete Applied Mathematics, 15, 221-239. doi:10.1016/0166-218X(86)90044-2 |
Crama, Y., Defourny, J., & Gazon, J. (1984). Structural decomposition of multipliers in input-output or social accounting matrix analysis. Économie Appliquée, 37, 215-222. |