NAZARENKO, A. B. On the density of states of anisotropic superconductors. ФІЗИКА НИЗЬКИХ ТЕМПЕРАТУР, Харків, Україна, v. 17, n. 9, p. 1065–1068, 1991. Disponível em: http://80.92.230.95/index.php/fnt/article/view/f17-1065e. Acesso em: 20 чер. 2025.