Kenderov П.; Chehlarova Т. The use of auxiliary files in the online competition “VIVA Mathematics with a Computer”. Mathematics and Education in Mathematics, [S. l.], v. 49, p. 220–228, 2020. Disponível em: https://smb.math.bas.bg/mem/index.php/memjournal/article/view/119. Acesso em: 5 oct. 2026.