MATEIKO, Oleg M. Victor Vladimirovich Krasnoproshin. Journal of the Belarusian State University. Mathematics and Informatics, [S. l.], n. 1, p. 107–108, 2018. Disponível em: https://journals.bsu.by/index.php/mathematics/article/view/892. Acesso em: 18 jul. 2026.