Index of volume 72 of „Ukrainian Mathematical Journal”. Ukrains’kyi Matematychnyi Zhurnal, [S. l.], v. 72, n. 12, p. 1724–1728, 2020. Disponível em: https://umj.imath.kiev.ua/index.php/umj/article/view/6485. Acesso em: 5 dec. 2025.