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Li, Guang De; Zhang, Chang Rui; Hu, Hai Feng; Zhang, Yu Di; Chen, Si’an; He, Xin Bo; Mei, Min . (2012). Preparation and Mechanical Properties of C/SiC Joints with Pins or Bolts. Key Engineering Materials, 531-532(), 377–382. doi:10.4028/www.scientific.net/kem.531-532.377 
An interview with Sci-Hub Founder Alexandra Elbakyan,Who exactly should pay for academic research