RICHTER, J. Localized-magnon states in strongly frustrated quantum spin lattices. ФІЗИКА НИЗЬКИХ ТЕМПЕРАТУР, Харків, Україна, v. 31, n. 8-9, p. 918–928, 2005. Disponível em: https://fnt.ilt.kharkov.ua/index.php/fnt/article/view/f31-0918e. Acesso em: 23 лис. 2024.