REIFFERS, M. Point-contact spectroscopy of the intermetallic compounds. ФІЗИКА НИЗЬКИХ ТЕМПЕРАТУР, Харків, Україна, v. 18, n. 5, p. 497–501, 1992. Disponível em: http://80.92.230.95/index.php/fnt/article/view/f18-0497e. Acesso em: 10 лис. 2025.