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Meng, Shiyao; Sun, Ningwei; Su, Kaixin; Zhao, Xiaogang; Wang, Daming; Zhou, Hongwei; Chen, Chunhai . (2017). Novel organosoluble polyarylates based on diphenylamine-fluorene units. High Performance Polymers, (), 095400831773403–. doi:10.1177/0954008317734033 
An interview with Sci-Hub Founder Alexandra Elbakyan,Who exactly should pay for academic research