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Zhang, Yuqing; Luo, Rong; Lytton, Robert L. . (2014). Anisotropic Characterization of Crack Growth in the Tertiary Flow of Asphalt Mixtures in Compression. Journal of Engineering Mechanics, 140(6), 04014032–. doi:10.1061/(ASCE)EM.1943-7889.0000745 
An interview with Sci-Hub Founder Alexandra Elbakyan,Who exactly should pay for academic research