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Cai, Guofa; Wang, Jiangxin; Qian, Kai; Chen, Jingwei; Li, Shaohui; Lee, Pooi See . (2016). Extremely Stretchable Strain Sensors Based on Conductive Self-Healing Dynamic Cross-Links Hydrogels for Human-Motion Detection. Advanced Science, (), –. doi:10.1002/advs.201600190 
An interview with Sci-Hub Founder Alexandra Elbakyan,Who exactly should pay for academic research