PROPERTIES OF ENHANCING UNITY AND STABILITY OF SET EXPRESSIONS. World Science, [S. l.], v. 1, n. 9(49), p. 42–45, 2019. DOI: 10.31435/rsglobal_ws/30092019/6701. Disponível em: https://rspublisher.org/index.php/ws/article/view/231. Acesso em: 17 mar. 2026.