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Liu, Yu; Zhang, Chuan-Chao; Zhang, Xie-Yi; Huang, Yuan-Chun . (2020). Understanding grain refinement of Sc addition in a Zr containing Al-Zn-Mg-Cu aluminum alloy from experiments and first-principles. Intermetallics, 123(), 106823–. doi:10.1016/j.intermet.2020.106823 
An interview with Sci-Hub Founder Alexandra Elbakyan,Who exactly should pay for academic research