ADAMYAN, V. M.; AROV, D. Z.; BEREZANSKY, Yu. M.; GORBACHUK, V. I.; GORBACHUK, M. L.; MIKHAILETS, V. A.; SAMOILENKO, A. M. Mark Grigorievich Krein (to the centenary of his birth). Ukrains’kyi Matematychnyi Zhurnal, [S. l.], v. 59, n. 5, p. 579–587, 2007. Disponível em: https://umj.imath.kiev.ua/index.php/umj/article/view/3333. Acesso em: 5 dec. 2025.