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He, Zengyou; Liang, Hao; Chen, Zheng; Zhao, Can; Liu, Yan . (2020). Detecting Statistically Significant Communities. IEEE Transactions on Knowledge and Data Engineering, (), 1–1. doi:10.1109/TKDE.2020.3015667 
An interview with Sci-Hub Founder Alexandra Elbakyan,Who exactly should pay for academic research