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Abbene, L.; Del Sordo, S.; Caroli, E.; Gerardi, G.; Raso, G.; Caccia, S.; Bertuccio, G. . (2009). Hard x-ray response of pixellated CdZnTe detectors. Journal of Applied Physics, 105(12), 124508–. doi:10.1063/1.3153161 
An interview with Sci-Hub Founder Alexandra Elbakyan,Who exactly should pay for academic research