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Julia M. Santos; Shikha Tewari; Andrew F.X. Goldberg; Renu A. Kowluru. (2011). Mitochondrial biogenesis and the development of diabetic retinopathy. , 51(10), 1849–1860. doi:10.1016/j.freeradbiomed.2011.08.017 
An interview with Sci-Hub Founder Alexandra Elbakyan,Who exactly should pay for academic research