Physical Mechanisms and Scaling Laws of K-Shell Double Photoionization - Hoszowska, J.; Kheifets, A.; Dousse, J.; Berset, M.; Bray, Igor; Cao, K.; Fennane, K.; Kayser, Y.; Kavcic, M.; Szlachetko, J.; Szlachetko, M. (The American Physical Society, 2009)