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Gupta, K. C.; Sahoo, Sujata; Khandekar, Keerti . (2002). Graft Copolymerization of Ethyl Acrylate onto Cellulose Using Ceric Ammonium Nitrate as Initiator in Aqueous Medium. Biomacromolecules, 3(5), 1087–1094. doi:10.1021/bm020060s 
An interview with Sci-Hub Founder Alexandra Elbakyan,Who exactly should pay for academic research