1. F.W.J. Hekking, Y.V. Nazarov, Phys. Rev. B 49, 6847 (1994)
2. J. Bardeen, L.N. Copper, J.R. Schrieffer, Phys. Rev. 106, 162–164 (1957)
3. M. Tinkham, Introduction to Superconductivity (McGraw-Hill, New York, 1975)
4. A.F. Andreev, Zh. Èksp. Teor. Fiz. 46, 1823 (1964) [Sov. Phys. JETP 19, 1228 (1964)]
5. D. Saint-James, J. Phys. (Paris) 25, 899 (1964)