Contains the keyword degenerate perturbation-theory
Natural Spinors Reveal How the Spin-Orbit Coupling Affects the Jahn-Teller Distortions in the Hexafluorotungstate(V) Anion. J Chem Theory Comput. 2012;8:3061-71. Abstract
Accurate ab initio potential energy curve of O-2. II. Core-valence correlations, relativistic contributions, and vibration-rotation spectrum. Journal of Chemical Physics. 2010;132:074307. Abstract
On the Ordering of Orbital Energies in High-Spin ROHF. Journal of Physical Chemistry A. 2010;114:8772-7. Abstract
