Nourany M, Ghorbani S, Borumand Saeid A. Open Filters and Congruence Relations on Self-Distributive Weak Heyting Algebras. B Sect Log [Internet]. 2024 Jun. 21 [cited 2026 Jan. 11];53(4):455-77. Available from: https://www.czasopisma.uni.lodz.pl/bulletin/article/view/22007