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Ripin, David H. Brown; Abele, Stefan; Cai, Weiling; Blumenkopf, Todd; Casavant, Jeffrey M.; Doty, Jonathan L.; Flanagan, Mark; Koecher, Christian; Laue, Klaus W.; McCarthy, Keith; Meltz, Cliff; Munchhoff, Mike; Pouwer, Kees; Shah, Bharat; Sun, Jianmin; Teixeira, John; Vries, Ton; Whipple, David A.; Wilcox, Glenn . (2003). Development of a Scaleable Route for the Production of <i>cis</i> - <i>N</i> -Benzyl-3-methylamino-4-methylpiperidine. Organic Process Research & Development, 7(1), 115–120. doi:10.1021/op025599x 
An interview with Sci-Hub Founder Alexandra Elbakyan,Who exactly should pay for academic research