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Extension of the sum rule for the transition rates between multiplets to the multiphoton case

D. Solovyev, L. Labzowsky, A. Volotka and G. Plunien

Eur. Phys. J. D, 61 2 (2011) 297-304

DOI: https://doi.org/10.1140/epjd/e2010-10485-3

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