MALAKHOVSKII, A.; GNATCHENKO, S.; KACHUR, I.; PIRYATINSKAYA, V.; GUDIM, I. Low-temperature absorption spectra and electron structure of HoFe₃(BO₃)₄ single crystal. ФІЗИКА НИЗЬКИХ ТЕМПЕРАТУР, Харків, Україна, v. 43, n. 5, p. 764–771, 2017. DOI: 10.1063/1.4985208. Disponível em: http://80.92.230.95/index.php/fnt/article/view/f43-0764e. Acesso em: 10 лис. 2025.