ANTONEVICH, Anatolii B. Yakov Valentinovich Radyno. Journal of the Belarusian State University. Mathematics and Informatics, [S. l.], n. 1, p. 65–66, 2017. Disponível em: https://journals.bsu.by/index.php/mathematics/article/view/741. Acesso em: 19 jul. 2026.