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Fang, Kang; He, Xiang; Shao, Min; Li, Ming-Xing . (2016). Solvent-regulated assemblies of four Zn(II) coordination polymers constructed by flexible tetracarboxylates and pyridyl ligands. Journal of Molecular Structure, 1118(), 233–240. doi:10.1016/j.molstruc.2016.04.019 
An interview with Sci-Hub Founder Alexandra Elbakyan,Who exactly should pay for academic research