FUGOL, I. Y.; SAMOVAROV, V. N.; RYBALKO, Y. I.; ZHURAVLEV, V. M. Luminescence of charge-sensitive oxygen centers in high-temperature super conductors: the effect of superconducting transition. ФІЗИКА НИЗЬКИХ ТЕМПЕРАТУР, Харків, Україна, v. 16, n. 5, p. 580–583, 1990. Disponível em: http://fnt.ilt.kharkiv.ua/index.php/fnt/article/view/f16-0580e. Acesso em: 5 трав. 2024.