CHERANOVSKII, V.; KLEIN, D.; EZERSKAYA, E.; TOKAREV, V. Validity of t–J approximation for extended Hubbard model with strong repulsion. ФІЗИКА НИЗЬКИХ ТЕМПЕРАТУР, Харків, Україна, v. 43, n. 11, p. 1622–1625, 2017. DOI: 10.1063/1.5010315. Disponível em: https://fnt.ilt.kharkov.ua/index.php/fnt/article/view/f43-1622e. Acesso em: 24 лис. 2024.