S. CICILY FLORA; I. AROCKIARANI. Bipolar Vague Boundary Space via Ring. International Journal of Mathematics And its Applications, [S. l.], v. 4, n. 2 - C, p. 13–22, 2016. Disponível em: https://ijmaa.in/index.php/ijmaa/article/view/1041. Acesso em: 22 jul. 2024.