S. VIJAYABARATHI. Positive Pre $A^*$-algebra Function in terms of DNF. International Journal of Mathematics And its Applications, [S. l.], v. 7, n. 2, p. 43–47, 2019. Disponível em: http://ijmaa.in/index.php/ijmaa/article/view/245. Acesso em: 3 may. 2024.