Zhu, Qiang. 2026. “Geochemical Characteristics and Geological Significance of Shale in Wufeng-Longmaxi Formations of Hefeng In Western Hunan-Hubei Underwater Uplift”. International Journal of Natural Resources and Environmental Studies 8 (3): 144-59. https://doi.org/10.62051/ijnres.v8n3.13.