%0 Journal Article %A I. V. Shirokov %T Darboux coordinates on $K$-orbits and the spectra of Casimir operators on Lie groups %J Teoretičeskaâ i matematičeskaâ fizika %D 2000 %P 407-423 %V 123 %N 3 %I mathdoc %U http://geodesic.mathdoc.fr/item/TMF_2000_123_3_a3/ %G ru %F TMF_2000_123_3_a3