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Y. Venkateswarlu; M.Venkata Rami Reddy; M.A.Farooq Biabani; J.Venkateswara Rao; K.Ravi Kumar. (1993). Ethylene bis (alkylxanthate) from a green alga Dictyosphaeria Favulosa. , 34(22), 3633–3634. doi:10.1016/s0040-4039(00)73655-0 
An interview with Sci-Hub Founder Alexandra Elbakyan,Who exactly should pay for academic research