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Sujittra Youngme; Achareeya Cheansirisomboon; Chanaiporn Danvirutai; Narongsak Chaichit; Chaveng Pakawatchai; Gerard A. van Albada; Jan Reedijk. (2006). Two new oxalato-bridged dinuclear copper(II) complexes with di-2-pyridylamine: crystal structures, spectroscopic and magnetic properties. , 9(9), 973–977. doi:10.1016/j.inoche.2006.05.022 
An interview with Sci-Hub Founder Alexandra Elbakyan,Who exactly should pay for academic research