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Liu, Jun; Jing, Feng; Jiang, Guiying; Liu, Jianguo . (2017). Effects of Straw Incorporation on Soil Organic Carbon Density and the Carbon Pool Management Index under Long-Term Continuous Cotton. Communications in Soil Science and Plant Analysis, (), 00103624.2016.1269799–. doi:10.1080/00103624.2016.1269799 
An interview with Sci-Hub Founder Alexandra Elbakyan,Who exactly should pay for academic research