Althaus, L. G., Panei, J. A., Miller Bertolami, M. M., et al. 2009, ApJ, 704, 1605
Barstow, M. A., Wesemael, F., Holberg, J. B., et al. 1993, Adv. Space Res., 13, 281
Barstow, M. A., Holberg, J. B., Werner, K., Buckley, D. A. H., & Stobie, R. S. 1994, MNRAS, 267, 653
Barstow, M. A., Holberg, J. B., Koester, D., Nousek, J. A., & Werner, K. 1995, in White Dwarfs (Berlin: Springer Verlag), eds. D. Koester, & K. Werner, Lect. Notes Phys., 443, 302
Barstow, M. A., Dreizler, S., Holberg, J. B., et al. 2000, MNRAS, 314, 109
Barstow, M. A., Dobbie, P. D., Forbes, A. E., & Boyce, D. D. 2007, in 15th EuropeanWorkshop on White Dwarfs, eds. R. Napiwotzki, & M. R. Burleigh, ASP Conf. Ser., 372, 243
Bloecker, T. 1995, A&A, 299, 755
Cutri, R. M., Skrutskie, M. F., van Dyk, S., et al. 2003a, 2MASS All Sky Catalog of point sources
Cutri, R. M., Skrutskie, M. F., van Dyk, S., et al. 2003b, VizieR Online Data Catalog: II/246
Demers, S., Beland, S., Kibblewhite, E. J., Irwin, M. J., & Nithakorn, D. S. 1986, AJ, 92, 878
Dobbie, P. D., Burleigh, M. R., Levan, A. J., et al. 2005, A&A, 439, 1159
Dreizler, S. 1999, A&A, 352, 632
Dreizler, S., & Werner, K. 1996, A&A, 314, 217
Dreizler, S., & Wolff, B. 1999, A&A, 348, 189
Dupuis, J., Vennes, S., Bowyer, S., Pradhan, A. K., & Thejll, P. 1995, ApJ, 455, 574
Fitzpatrick, E. L. 1999, PASP, 111, 63
Groenewegen, M. A. T., & Lamers, H. J. G. L. M. 1989, A&AS, 79, 359
Hügelmeyer, S. D., Dreizler, S., Homeier, D., et al. 2006, A&A, 454, 617
Jahn, D., Rauch, T., Reiff, E., et al. 2007, A&A, 462, 281
Kepler, S. O., Pelisoli, I., Koester, D., et al. 2016, MNRAS, 455, 3413
Kurucz, R. L. 2009, in AIP Conf. Ser. 1171, eds. I. Hubeny, J. M. Stone, K. MacGregor, & K. Werner, 43
Kurucz, R. L. 2011, Can. J. Phys., 89, 417
McCook, G. P., & Sion, E. M. 1999a, ApJS, 121, 1
McCook, G. P., & Sion, E. M. 1999b, VizieR Online Data Catalog: III/210
Morrison, R., & McCammon, D. 1983, ApJ, 270, 119
Müller-Ringat, E. 2013, Dissertation, University of Tübingen, Germany, http://nbn-resolving.de/urn:nbn:de:bsz:21-opus-67747
Napiwotzki, R., Christlieb, N., Drechsel, H., et al. 2001, Astron. Nachr., 322, 411
Napiwotzki, R., Christlieb, N., Drechsel, H., et al. 2003, The Messenger, 112, 25
Pauldrach, A., Puls, J., Kudritzki, R. P., Mendez, R. H., & Heap, S. R. 1988, A&A, 207, 123
Polomski, E. F., Vennes, S., & Chayer, P. 1995, in BAAS, AAS Meeting Abstracts, 27, 1311
Pounds, K. A., Allan, D. J., Barber, C., et al. 1993, MNRAS, 260, 77
Rauch, T., & Deetjen, J. L. 2003, in Stellar Atmosphere Modeling, eds. I. Hubeny, D. Mihalas, & K. Werner, ASP Conf. Ser., 288, 103
Rauch, T., Werner, K., Biémont, E., Quinet, P., & Kruk, J. W. 2012, A&A, 546, A55
Rauch, T., Werner, K., Quinet, P., & Kruk, J. W. 2014a, A&A, 564, A41
Rauch, T., Werner, K., Quinet, P., & Kruk, J. W. 2014b, A&A, 566, A10
Rauch, T., Hoyer, D., Quinet, P., Gallardo, M., & Raineri, M. 2015a, A&A, 577, A88
Rauch, T., Werner, K., Quinet, P., & Kruk, J. W. 2015b, A&A, 577, A6
Werner, K., Deetjen, J. L., Rauch, T., & Wolff, B. 2001, in 12th European Workshop on White Dwarfs, eds. J. L. Provencal, H. L. Shipman, J. MacDonald, & S. Goodchild, ASP Conf. Ser., 226, 55
Werner, K., Deetjen, J. L., Dreizler, S., et al. 2003, in Stellar Atmosphere Modeling, eds. I. Hubeny, D. Mihalas, & K. Werner, ASP Conf. Ser., 288, 31
Werner, K., Dreizler, S., & Rauch, T. 2012a, TMAP: Tübingen NLTE Model-Atmosphere Package, Astrophysics Source Code Library [record ascl:1212.015]
Werner, K., Rauch, T., Ringat, E., & Kruk, J. W. 2012b, ApJ, 753, L7
Werner, K., Rauch, T., & Kepler, S. O. 2014, A&A, 564, A53
Werner, K., Rauch, T., Kucas, S., & Kruk, J. W. 2015, A&A, 574, A29
