Lusheng, Yin, et al. “Coexistence and Development Model of Multi-Minerals Dominated by Multilayer Magma Intrusion: A Case Study of Huanghebei Coalfield in North China Basin”. Global Journal of Earth Science and Engineering, vol. 8, Nov. 2021, pp. 45-61, https://doi.org/10.15377/2409-5710.2021.08.4.