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. DOI: 10.1063/10.0025636. Disponível em: https://fnt.ilt.kharkiv.ua/index.php/fnt/article/view/9238. Acesso em: 21 лис. 2024.