R.M.TOLIPOV; M.S.XUSANOVA. BOSHLANG’ICH SINF MATEMATIKA DARSLARIDA KOMBINATORIKA MASALALARI USTIDA ISHLASH. University Research Base, [S. l.], p. 179–181, 2024. Disponível em: https://scholar.kokanduni.uz/index.php/rb/article/view/627. Acesso em: 5 dec. 2025.