POLITIS, C. High-T_c superconductivity of Bi- and Tl-mixed valence Cu-oxides . ФІЗИКА НИЗЬКИХ ТЕМПЕРАТУР, Харків, Україна, v. 16, n. 5, p. 568–568, 1990. Disponível em: http://80.92.230.95/index.php/fnt/article/view/f16-0568e. Acesso em: 20 чер. 2025.