Khan, M. Sajjad Ali, Khaista Rahman, S. Abdullah, and Fawad Hussain. “ON HYPER BCH-ALGEBRA”. Italian Journal of Pure and Applied Mathematics 41 (February 27, 2019): 85–96. Accessed October 27, 2026. https://journals.uniurb.it/index.php/ijpam/article/view/7150.