1. 1 M.Nambu and H.Akama, Physics of Fluids 28(1985) 2300.
2. 2 T.Nagamiya and R.Kubo edited, Solid state physics, 2nd edition (Kotai butsurigaku),(Iwanami Shoten) 176 (1966) (in Japanese).
3. 3 M.Nakayama, Electromagnetism of matter (Bussitsu no denjikigaku) (Iwanami Shoten) 190-191(1996) (in Japanese)
4. 4 P.G.de.Gennes, Superconductivity of Metals and Alloys, (Addison-Wesley Publishing Company(1989) ) pp 3-4.
5. Improved plasma performance on Large Helical Device