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E. Blanco; R. Rojas; P. Haeger; R. Cuevas; C. Perez; R. Munita; G. Quiroz; M. Estela Andrés; M.I. Forray; K. Gysling. (2006). Intron retention as an alternative splice variant of the rat urocortin 1 gene. , 140(4), 0–1252. doi:10.1016/j.neuroscience.2006.03.031 
An interview with Sci-Hub Founder Alexandra Elbakyan,Who exactly should pay for academic research