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|  | Ref. ID |  |  |  | Reference |  | 
|---|
 |  |  
|  |  |  |  |  |  |  |  | BW92b | J. Blaise and J.-F. Wyart, Energy Levels and Atomic Spectra of Actinides, International Tables of Selected Constants 20, Paris (1992). Also available at  http://www.lac.universite-paris-saclay.fr/Data/Database/. |  |  |  |  | FT57 | M. Fred and F. S. Tomkins, J. Opt. Soc. Am. 47, 1076 (1957). |  |  |  |  | KDEE97 | S. Köhler, R. Diessenberger, K. Eberhardt, N. Erdmann, G. Herrmann, G. Huber, J. V. Kratz, M. Nunnemann, G. Passler, P. M. Rao, J. Riegel, N. Trautmann, and K. Wendt, Spectrochim. Acta B 52, 717 (1997). |  |  |  |  |