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L. Kovarik; M.K. Miller; S.A. Court; M.J. Mills. (2006). Origin of the modified orientation relationship for S(S″)-phase in Al–Mg–Cu alloys. , 54(7), 1731–1740. doi:10.1016/j.actamat.2005.11.045 
An interview with Sci-Hub Founder Alexandra Elbakyan,Who exactly should pay for academic research