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Tan, Jin-Chong; Saines, Paul J.; Bithell, Erica G.; Cheetham, Anthony K. . (2012). Hybrid Nanosheets of an Inorganic–Organic Framework Material: Facile Synthesis, Structure, and Elastic Properties. ACS Nano, 6(1), 615–621. doi:10.1021/nn204054k 
An interview with Sci-Hub Founder Alexandra Elbakyan,Who exactly should pay for academic research