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Cui, Xiaoyang; Tang, Cheng; Zhang, Qiang . (2018). A Review of Electrocatalytic Reduction of Dinitrogen to Ammonia under Ambient Conditions. Advanced Energy Materials, (), 1800369–. doi:10.1002/aenm.201800369 
An interview with Sci-Hub Founder Alexandra Elbakyan,Who exactly should pay for academic research