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Katano, Susumu; Shibata, Kohei; Nakashima, Kotaro; Matsubara, Yohei . (2017). : Ce substitution for La. Physical Review B, 95(14), 144502–. doi:10.1103/PhysRevB.95.144502 
An interview with Sci-Hub Founder Alexandra Elbakyan,Who exactly should pay for academic research