EDITORIAL BOARD. Alphabetic index of vol. XVIII . Ukrains’kyi Matematychnyi Zhurnal, [S. l.], v. 18, n. 6, p. 141–144, 1966. Disponível em: https://umj.imath.kiev.ua/index.php/umj/article/view/8472. Acesso em: 6 dec. 2025.