References and Notes for Thorium ( Th )

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.u.psud.fr/Database/Contents.html.
GBCZ74 A. Giacchetti, J. Blaise, C. H. Corliss, and R. Zalubas, J. Res. Natl. Bur. Stand. (U.S.) 78A, 247 (1974).
GSZ70 A. Giacchetti, R. W. Stanley, and R. Zalubas, J. Opt. Soc. Am. 69, 474 (1970).
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).
MCS75 W. F. Meggers, C. H. Corliss, and B. F. Scribner, Natl. Bur. Stand. (U.S.), Monogr. 145 (1975).
NZLJ02 H. Nilsson, Z. G. Zhang, H. Lundberg, S. Johansson, and B. Nordström, Astron. Astrophys. 382, 368 (2002).
PE83 B. A. Palmer and R. Engleman, Jr., Los Alamos Natl. Lab. Report LA-9615 (1983). The accuracy of these data is comfirmed by their agreement with optogalvanic measurements [SW84] to ±0.0002 Å in the wavelength range 5750 to 6900 Å.
SW84 C. J. Sansonetti and K.-H. Weber, J. Opt. Soc. Am. B 1, 361 (1984).
Z79 R. Zalubas, unpublished (1979).