1. L. Nagamatsu, N. Nekagawa, T. Maranaka, Y. Zenitani, and J. Akimitsu, Nature (London) 410, 63 (2001).
2. V. A. Moskalenko, L. Z. Kon, and M. E. Palistrant, Low-Temperature Properties of Metals with Singularities of the Band Spectrum (Shtiintsa, Chisinau, 1989) [in Russian].
3. V. A. Moskalenko, L. Z. Kon, and M. E. Palistrant, Teoria Supraconductibilitatii Multi-Banda (Editura Tehnica, Bucureşti, 2008) [in Romanian].
4. V. A. Moskalenko, M. E. Palistrant, and V. M. Vakalyuk, Usp. Fiz. Nauk 161, 155 (1991) [Sov. Phys.—Usp. 34, 717 (1991)].
5. H. J. Choi, D. Roundy, H. Sun, M. L. Cohen, and S. G. Louie, Phys. Rev B: Condens. Matter 66, 020513 (2002); Nature (London) 418, 758 (2002).