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Domingos, J.L.; Andrade, D.A.; Freitas, M.A.A.; De Paula, H. . (2003). [IEEE 2003 IEEE International Symposium on Industrial Electronics - Rio de Janeiro, Brazil (9-11 June 2003)] 2003 IEEE International Symposium on Industrial Electronics ( Cat. No.03TH8692) - Four-quadrant operation drive strategy for a linear switched reluctance motor. , 1(), 210–215. doi:10.1109/ISIE.2003.1267247 
An interview with Sci-Hub Founder Alexandra Elbakyan,Who exactly should pay for academic research