Yue Chen, Shizhen Tao, Rui Kang, Jianrong Gao, Yiqing Yang, Xiang Fang, Wei Song, Yanyan Chen, Xiangbai Liu. "Evaluation of potential helium source rocks and helium enrichment factors in coalbed methane in the eastern margin of Ordos basin." Scientific Reports, 2026. doi:10.1038/s41598-025-28531-3