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Ralph M. W. Rödel; Wolfgang Steiner; Roland M. Müller; Martina Kron; Christoph Matthias. (2009). Endoscopic laser surgery of early glottic cancer: Involvement of the anterior commissure. , 31(5), 583–592. doi:10.1002/hed.20993 

An interview with Sci-Hub Founder Alexandra Elbakyan,Who exactly should pay for academic research