Khalifa, Sobhi A., and Ahmed M. M. Shalhi. “Shale Oil As Feedstock for Libyan Conventional Crude Oil Existing Refineries: ”. Conference On Engineering Science and Technology, vol. 6, no. 5، مجلة الجامعة الأسمرية, Dec. 2021, pp. 790-83, https://conf.asmarya.edu.ly/index.php/cest2021/article/view/158.