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Jun Fan; Tiantian Xiao; Jun Wang; Shengrun Zheng; Jingbo Tan; Weiguang Zhang. (2011). Synthesis, Crystal Structures and Thermal Stabilities of Lanthanide Coordination Polymers with 5-Nitroisophthalate. , 21(3), 723–729. doi:10.1007/s10904-011-9490-x 
An interview with Sci-Hub Founder Alexandra Elbakyan,Who exactly should pay for academic research