EDITORIALBOARD. Index of volume 48 of "Ukrainian Mathematical Journal". Ukrains’kyi Matematychnyi Zhurnal, [S. l.], v. 48, n. 12, p. 1722–1727, 1996. Disponível em: https://umj.imath.kiev.ua/index.php/umj/article/view/5195. Acesso em: 6 dec. 2025.