1. G. Eilenberger,Z. Phys. 214, 195 (1968).
2. A. I. Larkin and Yu. N. Ovchinnikov,Zh. Eksp. Teor. Fiz. 55, 2262 (1968) [Sov. Phys.?JETP 28, 1200 (1969)].
3. L. P. Gor'kov,Zh. Eksp. Theor. Fiz. 34, 735 (1958). [Sov. Phys.?JETP 7, 505, (1958)].
4. Albert Schmid, inNonequilibrium Superconductivity Phonons and Kapitza Boundaries (Proceedings of the NATO Advanced Study Institute, Acquafredda di Marathea, Italy, 1980).
5. Ulrich Eckern,Ann. Phys. (N.Y.),133, 390 (1981).