SAEMANN-ISCHENKO, G.; STROBEL, J. P. Electronic and transport properties of p- and n-doped HTSC. ФІЗИКА НИЗЬКИХ ТЕМПЕРАТУР, Харків, Україна, v. 17, n. 9, p. 1102–1105, 1991. Disponível em: http://80.92.230.95/index.php/fnt/article/view/f17-1102e. Acesso em: 10 лис. 2025.