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Li, Jialiang; Zheng, Qi; Peng, Limin; Huang, Zhipeng . (2016). Survival impact index and ultrahigh-dimensional model-free screening with survival outcomes. Biometrics, (), n/a–n/a. doi:10.1111/biom.12499 
An interview with Sci-Hub Founder Alexandra Elbakyan,Who exactly should pay for academic research