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Ye, X.W.; Yi, Ting-Hua; Dong, C.Z.; Liu, T. . (2016). Vision-based structural displacement measurement: System performance evaluation and influence factor analysis. Measurement, (), S0263224116000385–. doi:10.1016/j.measurement.2016.01.024 
An interview with Sci-Hub Founder Alexandra Elbakyan,Who exactly should pay for academic research