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Keskin, V.; Aktaş, B.; Schmalhorst, J.; Reiss, G.; Zhang, H.; Weischenberg, J.; Mokrousov, Y. . (2013). Temperature and Co thickness dependent sign change of the anomalous Hall effect in Co/Pd multilayers: An experimental and theoretical study. Applied Physics Letters, 102(2), 022416–. doi:10.1063/1.4776737 
An interview with Sci-Hub Founder Alexandra Elbakyan,Who exactly should pay for academic research