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E. Akpinar; B. Turkbey; M. Karcaaltincaba; D. Karaosmanoglu; D. Akata. (2008). MDCT of inferior mesenteric vein: normal anatomy and pathology. , 63(7), 0–823. doi:10.1016/j.crad.2007.09.001 
An interview with Sci-Hub Founder Alexandra Elbakyan,Who exactly should pay for academic research