ADAMENKO, I.; NEMCHENKO, K.; SLIPKO, V.; WYATT, A. Collective modes in superfluid helium when there is a relative velocity between the normal and superfluid components: Жидкий гелий. ФІЗИКА НИЗЬКИХ ТЕМПЕРАТУР, Харків, Україна, v. 34, n. 4-5, p. 357–366, 2008. DOI: 10.1063/1.2908889. Disponível em: https://fnt.ilt.kharkov.ua/index.php/fnt/article/view/f34-0357e. Acesso em: 21 лис. 2024.