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Kodama, Kota; Higuchi, Ryuichi; Miyamoto, Tomofumi; Van Soest, Rob W. M. . (2003). (−)-Axinyssene:  A Novel Cytotoxic Diterpene from a Japanese Marine Sponge <i>Axinyssa</i> sp. Organic Letters, 5(2), 169–171. doi:10.1021/ol027202f 
An interview with Sci-Hub Founder Alexandra Elbakyan,Who exactly should pay for academic research