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Kawata, K.; Tierney, R.; Phillips, J.; Jeka, J. . (2016). Effect of Repetitive Sub-concussive Head Impacts on Ocular Near Point of Convergence. International Journal of Sports Medicine, (), s-0035-1569290–. doi:10.1055/s-0035-1569290 
An interview with Sci-Hub Founder Alexandra Elbakyan,Who exactly should pay for academic research