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Kang, Jahyo; Kim, Yong Ha; Park, Min; Lee, Chul Hae; Kim, Wan-Joo . (1984). An Improved Preparation of Triacetic Acid Derivatives. Synthetic Communications, 14(3), 265–269. doi:10.1080/00397918408060731 
An interview with Sci-Hub Founder Alexandra Elbakyan,Who exactly should pay for academic research