1. V. S. Gorbachev and S. E. Savel’ev, Zh. Éksp. Teor. Fiz. 109, 1387 (1996) [JETP 82, 748 (1996)].
2. A. A. Elistratov and I. L. Maksimov, Fiz. Tverd. Tela (St. Petersburg) 42, 196 (2000) [Phys. Solid State 42, 201 (2000)].
3. M. Benkraouda and J. R. Clem, Phys. Rev. B 53, 5716 (1996).
4. E. Zeldov, A. Larkin, V. Geshkenbein, et al., Phys. Rev. Lett. 73, 1428 (1994).
5. E. Zeldov, J. R. Clem, M. Mcelfresh, et al., Phys. Rev. B 49, 9802 (1994).