EDITORIALBOARD. Index of volume 65 of „Ukrainian Mathematical Journal”. Ukrains’kyi Matematychnyi Zhurnal, [S. l.], v. 65, n. 12, p. 1723–1725, 2013. Disponível em: https://umj.imath.kiev.ua/index.php/umj/article/view/2550. Acesso em: 5 dec. 2025.