1. K. Inoue, T. Takeuchi, T. Kiyoshi, K. Itoh, H. Wada, H. Maeda, T. Fujioka, S. Murase, Y. Wachi, S. Hanai, and T. Sasaki, Development of 40 tesla class hybrid magnet system, IEEE Trans. Magn. 28: 493 (1992).
2. T. Kiyoshi, K. Inoue, K. Itoh, T. Takeuchi, H. Wada, H. Maeda, K. Kuroishi, F. Suzuki, T. Takizawa, N. Tada, and H. Mori, Generation of magnetic fields over 20 T using a newly developed superconducting magnet system, IEEE Trans. Appl. Supercond. 3: 78 (1993).
3. K. Tachikawa, H. Sekine, and Y. Iijima, Fabrication process of Nb3Sn composite superconductors, NRIM, Japan Patent No. 1378791 (1987).
4. Y. Iwasa, M. J. Leupold, R. J. Weggel, and J. E. C. Williams, Hybrid III: The system, test results, the next step, IEEE Trans. dAppl. Supercond. 3: 57 (1993).
5. K. Inoue, T. Takeuchi, K. Itoh, S. Murase, H. Shiraki, S. Nakayama, T. Fujioka, T. Tamajima, and Y. Sumiyoshi, High-field superconducting properties of a 16 T class (Nb, Ti)3Sn conductor by the tube method, in “11 th Inter. Conf. on Magnet Technology” T. Sekiguchi and S. Shimamoto, eds., Elsevier Appl. Sciene., London & New York (1989).