A Comparative Study on Different Types of Attention in Abacus Users & Non Users . International Journal of Physiology, [S. l.], v. 7, n. 4, p. 226–228, 2019. DOI: 10.37506/ijop.v7i4.96. Disponível em: https://mail.ijop.net/index.php/ijop/article/view/96. Acesso em: 17 may. 2026.