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. Disponível em: http://80.92.230.95/index.php/fnt/article/view/9481. Acesso em: 10 лис. 2025.