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Kamitani, M.; Sakai, H.; Tokura, Y.; Ishiwata, S. . (2016). Relation between the structural phase transition and superconductivity in. Physical Review B, 94(13), 134507–. doi:10.1103/PhysRevB.94.134507 
An interview with Sci-Hub Founder Alexandra Elbakyan,Who exactly should pay for academic research