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Isik Coban; Sayit Sargin; Melih Soner Celiktas; Ozlem Yesil-Celiktas. (2012). Bioethanol production from raffinate phase of supercritical CO2 extracted Stevia rebaudiana leaves. , 120(none), –. doi:10.1016/j.biortech.2012.06.057 
An interview with Sci-Hub Founder Alexandra Elbakyan,Who exactly should pay for academic research