PM3
Lanthanide coordination compounds modeling: Sparkle/PM3 parameters for dysprosium (III), holmium (III) and erbium (III)
Simas, Alfredo M. Freire, Ricardo O. Rocha, Gerd B.
JOURNAL OF ORGANOMETALLIC CHEMISTRY, 2008, 693 (10), pp 1952-1956
Supplementary information available.