Li, Pingping, Huiyong Wang, and Shuanxiang Xu. “Hydrocarbon Generation Potential Evaluation of Coal Shale Gas of Permo-Carboniferous in Jiyang Depression”. Journal of Geological Research 1, no. 2 (September 30, 2019): 1–8. Accessed May 1, 2024. https://journals.bilpubgroup.com/index.php/jgr-a/article/view/893.