M. Tomita and M. Murakami, "High-temperature superconductor bulk magnets that can trap magnetic fields of over 17 tesla at 29 K," Nature, vol. 421, no. 6922, pp. 517-520, Jan. 30, 2003.
G. Fuchs et al., "Trapped magnetic fields larger than 14 T in bulk YBa2Cu3O7?x," Appl. Phys. Lett., vol. 76, no. 15, pp. 2107-2109, Apr. 2000.
D. W. Hazelton, "HTS conductor forum-Representative manufacturer's point of view," in Proc. EUCAS, Genova, Italy, Sep. 17, 2013, pp. 1-9.
T. A. Coombs, "Superconducting magnetic systems," Patent Appl. GB 2 431-519, Apr. 25, 2007.
T. A. Coombs, Z. Hong, X. Zhu, G. Krabbes, "A novel heat engine for magnetising superconductors," Supercond. Sci. Technol., vol. 21, no. 3, pp. 0340011-0340017, Mar. 2008.
T. A. Coombs, Z. Hong, Y. Yan, C. D. Rawlings, "The next generation of superconducting permanent magnets: The flux pumping method," IEEE Trans. Appl. Supercond., vol. 19, no. 3, pp. 2169-2173, Jun. 2009.
L. J. M. van de Klundert and H. H. J. ten Kate, "Fully superconducting rectifiers and flux pumps," Cryogenics, vol. 21, no. 4, pp. 195-206, Apr. 1981.
