IVANOV, A. F.; MAISTRENKO, Yu. L.; ROMANENKO, O. Yu. Oleksandr Mykolayovych Sharkovs’kyi (07.12.1936 – 21.11.2022). Ukrains’kyi Matematychnyi Zhurnal, [S. l.], v. 75, n. 12, p. 1587–1590, 2024. DOI: 10.3842/umzh.v75i12.7913. Disponível em: https://umj.imath.kiev.ua/index.php/umj/article/view/7913. Acesso em: 5 apr. 2025.