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Song, Zhitang; Liu, Weili; Wang, Liangyong . (2015). Chemical Mechanical Polishing Slurry for Amorphous Ge2Sb2Te5. Procedia Engineering, 102(), 582–589. doi:10.1016/j.proeng.2015.01.131 

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