Mahmood, Tahir, and Ubaid ur Rehman. “Bipolar Complex Fuzzy Subalgebras and Ideals of BCK/BCI-Algebras”. Journal of Decision Analytics and Intelligent Computing 3, no. 1 (April 21, 2023): 47–61. Accessed April 29, 2024. https://www.jdaic-journal.org/index.php/about/article/view/26.