MATEIKO, Oleg M. Veniamin Grigorʼevich Krotov. Journal of the Belarusian State University. Mathematics and Informatics, [S. l.], n. 2, p. 73–75, 2019. Disponível em: https://journals.bsu.by/index.php/mathematics/article/view/954. Acesso em: 18 jul. 2026.