1. 1) K. Watanabe, et al.: “Performance of a cryogen-free 30 T hybrid magnet,” IEEE Appl. Supercond. (in press)
2. 2) M. D. Bird, et al.: “The 45 T hybrid insert: recent achievements,” Physica B 294-295 (2001) 639-642
3. 3) G. Aubert, et al.: “Hybrid and Giga-NMR projects at the Grenoble High Magnetic Field Laboratory,” IEEE Trans. Appl. Supercond. 14 (2004) 1280-1282
4. 4) S. A. J. Wiegers, et al.: “Design for a 30 T resistive insert in a 40+ T hybrid magnet at the Nijmegen HFML,” IEEE Trans. Appl. Supercond. 14 (2004) 1257-1259
5. 5) K. Kindo: “100 T magnet developed in Osaka,” Physica B 294-295 (2001) 585-590