A. Yassin, Atif, Sulafa A. E. Ahmed, Maha A. A. Abdelrahman, & Abdallah B. Karama. " Effect of Additives on the Performance of Bio-lubricant Base Oil Produced from Colocynthis Seeds Oil." Gezira Journal of Engineering and Applied Sciences [Online], 14.2 (2019): n. pag. Web. 3 Jun. 2026