NYEKI, J.; RAY, R.; SHESHIN, G.; MAIDANOV, V.; MIKHEEV, V.; COWAN, B.; SAUNDERS, J. Structure and superfluidity of ⁴He films on plated graphite. ФІЗИКА НИЗЬКИХ ТЕМПЕРАТУР, Харків, Україна, v. 23, n. 5-6, p. 515–526, 1997. Disponível em: http://80.92.230.95/index.php/fnt/article/view/f23-0515e. Acesso em: 10 лис. 2025.