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FU, BIN; LI, WENXIN; WU, MINGHUI; LI, RONGFENG; XU, ZHUOQUN . (2012). A DOCUMENT RECTIFICATION APPROACH DEALING WITH BOTH PERSPECTIVE DISTORTION AND WARPING BASED ON TEXT FLOW CURVE FITTING. International Journal of Image and Graphics, 12(1), 1250002–. doi:10.1142/s0219467812500027 
An interview with Sci-Hub Founder Alexandra Elbakyan,Who exactly should pay for academic research