ADAMYAN, V.; SMYRNOV, O. Linear, diatomic crystal: single-electron states and large-radius excitons. ФІЗИКА НИЗЬКИХ ТЕМПЕРАТУР, Харків, Україна, v. 35, n. 5, p. 503–510, 2009. DOI: 10.1063/1.3132746. Disponível em: http://fnt.ilt.kharkiv.ua/index.php/fnt/article/view/f35-0503e. Acesso em: 5 трав. 2024.