1. Yu. V. Nazarov, Sov. Phys. JETP 68, 561 (1989).
2. Yu. V. Nazarov, Ann. Phys. (Leipzig) 16, 720 (2007).
3. M. H. Devoret, D. Esteve, H. Grabert, G.-L. Ingold, H. Pothier, and C. Urbina, Phys. Rev. Lett. 64, 1824 (1990).
4. S. M. Girvin, L. I. Glazman, M. Jonson, D. R. Penn, and M. D. Stiles Phys. Rev. Lett. 64, 3183 (1990).
5. D. V. Averin and K. Likharev, in Quantum Efects in Small Disordered Systems, ed. by B. L. Altshuler, P. A. Lee, and R. A. Webb (Elsevier, Amsterdam, 1991); G. Schön and A. D. Zaikin, Phys. Rep. 198, 237 (1990).