ALIYEV, S. J.; TAHIROV, B. O.; HASHIMOVA, T. A. Variative Problems in Teaching Mathematics. European Journal of Pure and Applied Mathematics, [S. l.], v. 15, n. 3, p. 1015–1022, 2022. DOI: 10.29020/nybg.ejpam.v15i3.4431. Disponível em: https://ejpam.com/index.php/ejpam/article/view/4431. Acesso em: 4 oct. 2022.