Elbadawi A, Suliman S, Elkhair H, Abuelhassan H, Sabahelkhier M. Recycling edible vegetable oils by using various types of alkali with alcohol to produce biodiesel and study its optical and physical properties. Int. J. Environ. [Internet]. 2014 May 30 [cited 2024 Apr. 25];3(2):143-9. Available from: https://www.nepjol.info/index.php/IJE/article/view/10525