Ashraf, Saher, Majid Hussain, Muhammad Waseem Mumtaz, and Muhammad Shuaib. 2017. “Biodiesel Production by Alkali Catalyzed Transesterification of Chicken and Beef Fats”. International Journal of Alternative Fuels and Energy 1 (1):14-20. https://psmjournals.org/index.php/ijafe/article/view/130.