ADAMYAN, V. M. et al. Myroslav L’vovych Horbachuk (on his 70th birthday). Ukrains’kyi Matematychnyi Zhurnal, [S. l.], v. 60, n. 4, p. 439–442, 2008. Disponível em: https://umj.imath.kiev.ua/index.php/umj/article/view/3166. Acesso em: 27 apr. 2025.