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Cheng, Ping-Shing; Hau, Sam C.K.; Mak, Thomas C.W. . (2013). Layer-type organosilver(I) complexes assembled with nitrate and functionalized phenylethynide ligands. Inorganica Chimica Acta, 403(), 110–119. doi:10.1016/j.ica.2013.03.014 
An interview with Sci-Hub Founder Alexandra Elbakyan,Who exactly should pay for academic research