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Wang, Min. (2019). Study on Polymer Flooding Objects and Utilization Limits of Three Types of Oil Layers in Daqing Oilfield. IOP Conference Series: Earth and Environmental Science, 300(), 022059–. doi:10.1088/1755-1315/300/2/022059 
An interview with Sci-Hub Founder Alexandra Elbakyan,Who exactly should pay for academic research