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Nguyen, Duy-Liem; Ngoc-Tra Lam, My; Kim, Dong-Joo; Song, Jiandong . (2020). Direct tensile self-sensing and fracture energy of steel-fiber-reinforced concretes. Composites Part B: Engineering, 183(), 107714–. doi:10.1016/j.compositesb.2019.107714 
An interview with Sci-Hub Founder Alexandra Elbakyan,Who exactly should pay for academic research