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Kim, Ju Hyun; Ko, Young Ok; Bouffard, Jean; Lee, Sang-gi . (2015). Advances in tandem reactions with organozinc reagents. Chem. Soc. Rev., 44(8), 2489–2507. doi:10.1039/C4CS00430B 
An interview with Sci-Hub Founder Alexandra Elbakyan,Who exactly should pay for academic research