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Stefan Müller; Stefan Hoffmann. (2010). Internationale Markennamen: Die Standardisierungs-/Differenzierungsentscheidung anhand linguistischer Kriterien. , 49(1), 43–51. doi:10.1007/s12642-009-0014-y 
An interview with Sci-Hub Founder Alexandra Elbakyan,Who exactly should pay for academic research