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L. Zhang; H. Lee; J. Peng; Z. Zhong; X. Zu. (2008). Study of intergranular exchange coupling in longitudinal CoCrPt and perpendicular CoNi/Pt thin films for magnetic recording. , (), –. doi:10.1088/0022-3727/41/19/195009 
An interview with Sci-Hub Founder Alexandra Elbakyan,Who exactly should pay for academic research