1. 1) K. Tachikawa: “Metallic superconductors [3] –Nb3Sn and V3Ga wires (part one)–,” TEION KOGAKU 45 (2010) 88-98 (in Japanese)
2. 2) K. Tachikawa: “Metallic superconductors [4] –Nb3Sn and V3Ga wires (part two)–,” TEION KOGAKU 45 (2010) 226-237 (in Japanese)
3. 3) Eds. T. Takeuchi, et al.: “Feature: Status and perspective of the A15-type superconducting wires,” TEION KOGAKU 47 (2012) 473-519 (in Japanese)
4. 4) Eds. R. Heller, et al.: “Special issue on low-Tc superconducting materials,” Cryogenics 48 (2008) 281-395
5. 6) K. Tachikawa: “Studies on superconducting V3Ga wire,” Proc. ICEC-3, Illife Sci.&Technol. Pub., Surrey UK (1970) 339-340