Multifractal characteristics of pore structure in the terrestrial shale reservoirs of the Lianggaoshan formation in northeast sichuan basin and its geological significance - Wang, Jiping; Shao, Hongmei; Zhang, Yuanhao; Jiang, Zhenxue; Gao, Bo; Li, Lingling; Pan, Huifang; Wang, Haonan; Lu, Xi; Qiu, Hengyuan; He, Xiaobiao; Zhang, Chengju (Frontiers in Earth Science, 2025)