1. Parks, R.D.: Superconductivity, ed. CRC Press (1969)
2. Tinkham, M.: Introduction to Superconductivity, ed. Dover Books (2004)
3. Schrieffer, J.R.: Theory of Superconductivity, ed. Addison-Wesley (1993)
4. De Gennes, P.G.: Superconductivity of Metals and Alloys. Addison-Wesley, Reading (1989)
5. Ando, Y., et al.: Phys. Rev. Lett. 88, 137005 (2002)