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Guo, Feng; Yang, Dan; Eriksson, Kenneth A.; Guo, Ling . (2015). Paleoenvironments, stratigraphic evolution and reservoir characteristics of the Upper Cretaceous Yingjisha Group, southwest Tarim Basin. Marine and Petroleum Geology, 67(), 336–355. doi:10.1016/j.marpetgeo.2015.05.023 
An interview with Sci-Hub Founder Alexandra Elbakyan,Who exactly should pay for academic research