1. See for example: J.R. Schrieffer, Theory of superconductivity (1964), W.A. Benjamin, New York
2. See for example: M. Tinkham, Introduction to superconductivity (1975) McGraw-Hill, New York
3. Tallon, J. L., and Loram, J. W., Physica C (2001) 349, p.,53
4. Van Harlingen, D. J., Rev. Mod. Phys. (1995) 67, p. 515–535
5. Tsuei, C. C., and Kirtley, J. R., Rev. Mod. Phys. (2000) 72, p. 969–1016