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Song, Hao; Yang, Yannan; Geng, Jing; Gu, Zhengying; Zou, Jin; Yu, Chengzhong . (2019). Hollow Nanostructures: Electron Tomography: A Unique Tool Solving Intricate Hollow Nanostructures (Adv. Mater. 38/2019). Advanced Materials, 31(38), 1970272–. doi:10.1002/adma.201970272 
An interview with Sci-Hub Founder Alexandra Elbakyan,Who exactly should pay for academic research