Sendova Е. Acad. Blagovest Sendov – the mathematician (and not only): 90 years since his birth. Mathematics and Education in Mathematics, [S. l.], v. 51, p. 9–19, 2022. Disponível em: https://smb.math.bas.bg/mem/index.php/memjournal/article/view/47. Acesso em: 7 oct. 2026.