Irfan M. Α., and F. A. Almufadi. “Investigation of Mechanical Properties of Shale Rock in Qassim Region, Saudi Arabia”. Engineering, Technology & Applied Science Research 9, no. 1 (February 16, 2019): 3696–3698. Accessed June 30, 2024. https://etasr.com/index.php/ETASR/article/view/2468.