1. B. L. Al’tshuler and A. G. Aronov, Zh. Éksp. Teor. Fiz. 77, 2028 (1979) [Sov. Phys. JETP 50, 962 (1979)].
2. B. L. Altshuler and A. G. Aronov, Solid State Commun. 46, 429 (1983).
3. A. M. Finkel’shtein, Zh. Éksp. Teor. Fiz. 84, 168 (1983) [Sov. Phys. JETP 57, 97 (1983)].
4. P. A. Lee and T. V. Ramakrishnan, Rev. Mod. Phys. 57, 287 (1985).
5. M. I. Katsnel’son and M. V. Sadovskii, Fiz. Tverd. Tela (Leningrad) 25, 3372 (1983) [Sov. Phys. Solid State 25, 1942 (1983)].