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O. Bing; G. Bonneaud; D. Magnac-Valette; C. Gerardin. (1976). (t, d) reactions on 45Sc, 52Cr and 60Ni in the sub-Coulombic energy range. , 257(3), 460–476. doi:10.1016/0375-9474(76)90585-6 
An interview with Sci-Hub Founder Alexandra Elbakyan,Who exactly should pay for academic research