Unicorns in the world of chemical bonding models. - Gernot Frenking; Andreas Krapp (J. Comput. Chem., 2007)

Electronic structure of CO - An exercise in modern chemical bonding theory. - Gernot Frenking; Christoph Loschen; Andreas Krapp; Stefan Fau; Steven H. Strauss (J. Comput. Chem., 2007)