EDITORIALBOARD. Sergei Nikolaevich Chernikov (on the 90th Anniversary of His Birth). Ukrains’kyi Matematychnyi Zhurnal, [S. l.], v. 54, n. 6, p. 743–744, 2002. Disponível em: https://umj.imath.kiev.ua/index.php/umj/article/view/4111. Acesso em: 5 dec. 2025.