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Zhang, Guiguan; Sun, Yuli; Qian, Bingkun; Gao, Hang; Zuo, Dunwen . (2020). Experimental study on mechanical performance of polydimethylsiloxane (PDMS) at various temperatures. Polymer Testing, 90(), 106670–. doi:10.1016/j.polymertesting.2020.106670 
An interview with Sci-Hub Founder Alexandra Elbakyan,Who exactly should pay for academic research