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Martinez-Mier, Gustavo; Toledo-Pereyra, Luis H.; Ward, Peter A. . (2001). Adhesion Molecules and Hemorrhagic Shock. The Journal of Trauma: Injury, Infection, and Critical Care, 51(2), 408–415. doi:10.1097/00005373-200108000-00036 
An interview with Sci-Hub Founder Alexandra Elbakyan,Who exactly should pay for academic research