Alaba, Berhanu Assaye, Mihret Alamneh, and Yeshiwas Mebrat Gubena. 2018. “Skew Semi-Heyting Algebras”. (IJCSAM) International Journal of Computing Science and Applied Mathematics 4 (1):10-14. https://journal.its.ac.id/index.php/ijcsam/article/view/4565.