EDITORIAL BOARD, . Ivan Oleksandrovych Lukovs’kyi(on his 85th birthday). Ukrains’kyi Matematychnyi Zhurnal, [S. l.], v. 73, n. 10, p. 1299–1300, 2021. DOI: 10.37863/umzh.v73i10.6952. Disponível em: https://umj.imath.kiev.ua/index.php/umj/article/view/6952. Acesso em: 5 dec. 2025.