MOSKVIN, A.; PISAREV, R. Optical spectroscopy of charge transfer transitions in multiferroic manganites, ferrites, and related insulators (Review Article). ФІЗИКА НИЗЬКИХ ТЕМПЕРАТУР, Харків, Україна, v. 36, n. 6, p. 613–639, 2010. DOI: 10.1063/1.3455721. Disponível em: https://fnt.ilt.kharkiv.ua/index.php/fnt/article/view/f36-0613e. Acesso em: 2 трав. 2024.