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Dr. Siyang Xing; Yan Li; Zhen Li; Chang Liu; Jun Ren; Prof. Zhongwen Wang. (2011). Lewis Acid Catalyzed Intramolecular [3+2] Cross-Cycloaddition of Donor–Acceptor Cyclopropanes with Carbonyls: A General Strategy for the Construction of Acetal[<em>n</em>.2.1] Skeletons. , 50(52), 12605–12609. doi:10.1002/anie.201106368 
An interview with Sci-Hub Founder Alexandra Elbakyan,Who exactly should pay for academic research