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Zhang, Weijun; Zhang, Kunxi; Yan, Shifeng; Wu, Jie; Yin, Jingbo . (2018). Tough and self-healing poly(L-glutamic acid) based composite hydrogel for tissue engineering. Journal of Materials Chemistry B, (), 10.1039.C8TB01981A–. doi:10.1039/C8TB01981A 

An interview with Sci-Hub Founder Alexandra Elbakyan,Who exactly should pay for academic research