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Smith, Elke Stefanie; Junger, Jessica; Derntl, Birgit; Habel, Ute . (2015). The transsexual brain - a review of findings on the neural basis of transsexualism. Neuroscience & Biobehavioral Reviews, (), S0149763415002432–. doi:10.1016/j.neubiorev.2015.09.008 
An interview with Sci-Hub Founder Alexandra Elbakyan,Who exactly should pay for academic research