Yanev Н. A. N. Kolmogorov – 120th anniversary. Mathematics and Education in Mathematics, [S. l.], v. 52, p. 25–36, 2023. DOI: 10.55630/mem.2023.52.25-36. Disponível em: https://smb.math.bas.bg/mem/index.php/memjournal/article/view/72. Acesso em: 7 oct. 2026.