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Liu, Y.Z.; Zhan, L.H.; Ma, Q.Q.; Ma, Z.Y.; Huang, M.H. . (2015). Effects of alternating magnetic field aged on microstructure and mechanical properties of AA2219 aluminum alloy. Journal of Alloys and Compounds, 647(), 644–647. doi:10.1016/j.jallcom.2015.05.183 
An interview with Sci-Hub Founder Alexandra Elbakyan,Who exactly should pay for academic research