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T. Aït Si Selmi; D. Fithian; P. Neyret. (2006). The evolution of osteoarthritis in 103 patients with ACL reconstruction at 17 years follow-up. , 13(5), 353–358. doi:10.1016/j.knee.2006.02.014 
An interview with Sci-Hub Founder Alexandra Elbakyan,Who exactly should pay for academic research