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A. Lazzaro; F. Cappuzzello; A. Cunsolo; M. Cavallaro; A. Foti; A. Khouaja; S.E.A. Orrigo; J.S. Winfield. (2007). Field simulations for large dipole magnets. , 570(1), 192–204. doi:10.1016/j.nima.2006.10.055 
An interview with Sci-Hub Founder Alexandra Elbakyan,Who exactly should pay for academic research