MATEIKO, Oleg M. Valerii Aleksandrovich Erovenko . Journal of the Belarusian State University. Mathematics and Informatics, [S. l.], n. 1, p. 82–83, 2020. Disponível em: https://journals.bsu.by/index.php/mathematics/article/view/2751. Acesso em: 17 jul. 2026.