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Wang, Shufang; Dong, Dazhong; Wang, Yuman; Li, Xinjing; Huang, Jinliang; Guan, Quanzhong . (2015). Sedimentary geochemical proxies for paleoenvironment interpretation of organic-rich shale: A case study of the Lower Silurian Longmaxi Formation, Southern Sichuan Basin, China. Journal of Natural Gas Science and Engineering, (), S1875510015302857–. doi:10.1016/j.jngse.2015.11.045 
An interview with Sci-Hub Founder Alexandra Elbakyan,Who exactly should pay for academic research