SIDYGANOV, V. U.; KUPCHIKHIN, P. M. T-q diagram for the analysis of refrigerator circuits working on superfluid helium. ФІЗИКА НИЗЬКИХ ТЕМПЕРАТУР, Харків, Україна, v. 16, n. 4, p. 465–467, 1990. Disponível em: https://fnt.ilt.kharkov.ua/index.php/fnt/article/view/f16-0465e. Acesso em: 21 лис. 2024.