Experimental evidence for selection rules in multiphoton double ionization of helium and neon - K. Henrichs, S. Eckart, A. Hartung, D. Trabert, J. Rist, H. Sann, M. Pitzer, M. Richter, H. Kang, M. S. Schöffler, M. Kunitski, T. Jahnke, and R. Dörner (American Physical Society (APS), 2018)
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Keywords: U