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John Bosco, J. W.; Rama Raju, B.; Saikia, Anil K. . (2004). Potassium Fluoride Assisted Selective Acetylation of Alcohols with Acetic Acid. Synthetic Communications, 34(15), 2849–2855. doi:10.1081/scc-200026245 
An interview with Sci-Hub Founder Alexandra Elbakyan,Who exactly should pay for academic research