GUSLIENKO, K. Y. .; TARTAKOVSKAYA, E. V. . Hopf index of the toroidal magnetic hopfions in cylindrical and spherical dots. ФІЗИКА НИЗЬКИХ ТЕМПЕРАТУР, Харків, Україна, v. 51, n. 6, p. 776–781, 2025. DOI: 10.1063/10.0036746. Disponível em: https://fnt.ilt.kharkiv.ua/index.php/fnt/article/view/9481. Acesso em: 28 чер. 2025.