KACHUR, I. S. .; KURNOSOV, V. S. .; PIRYATINSKAYA, V. G. . Inversion of exchange interaction sign of Nd³⁺ excited states and its manifestation in optical absorption spectra of NdFe₃(BO₃)₄ crystal. ФІЗИКА НИЗЬКИХ ТЕМПЕРАТУР, Харків, Україна, v. 50, n. 5, p. 465–468, 2024. Disponível em: http://fnt.ilt.kharkov.ua/index.php/fnt/article/view/9238. Acesso em: 9 трав. 2024.