KULIK, I. O. Ballistic and nonballistic regimes in point-contact spectroscopy. ФІЗИКА НИЗЬКИХ ТЕМПЕРАТУР, Харків, Україна, v. 18, n. 5, p. 450–549, 1992. Disponível em: http://80.92.230.95/index.php/fnt/article/view/f18-0450e. Acesso em: 20 чер. 2025.