Restoring the original hydrocarbon-generating potential of deep source rocks: A critical review and a novel method using the Songliao Basin, China, as a case study - Daming Niu; Tianyi Li; Yueyue Bai; Pingchang Sun; Hongliang Dang; Yilin Li; Lianxin Tao; Xingxuan Lei; Sicheng Li; Lixiang Gui; Chunlong Liu (International Journal of Coal Geology, 2025)