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Wang, Kaixuan; Yang, Liping; Zhao, Weiliang; Cao, Linqing; Sun, Zhenliang; Zhang, Fang . (2017). A facile synthesis of copper nanoparticles supported on an ordered mesoporous polymer as an efficient and stable catalyst for solvent-free sonogashira coupling Reactions. Green Chem., 19(8), 1949–1957. doi:10.1039/C7GC00219J 
An interview with Sci-Hub Founder Alexandra Elbakyan,Who exactly should pay for academic research