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Nadarajah, Saralees; Cordeiro, Gauss M.; Ortega, Edwin M.M. . (2012). General results for the Kumaraswamy-G distribution. Journal of Statistical Computation and Simulation, 82(7), 951–979. doi:10.1080/00949655.2011.562504 
An interview with Sci-Hub Founder Alexandra Elbakyan,Who exactly should pay for academic research