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Fei, Zaiyao; Huang, Bevin; Malinowski, Paul; Wang, Wenbo; Song, Tiancheng; Sanchez, Joshua; Yao, Wang; Xiao, Di; Zhu, Xiaoyang; May, Andrew F.; Wu, Weida; Cobden, David H.; Chu, Jiun-Haw; Xu, Xiaodong . (2018). Two-dimensional itinerant ferromagnetism in atomically thin Fe3GeTe2. Nature Materials, (), –. doi:10.1038/s41563-018-0149-7 
An interview with Sci-Hub Founder Alexandra Elbakyan,Who exactly should pay for academic research