1. The Nature of the Chemical Bond;Pauling,1960
2. Coulsons Chemische Bindung;McWeeny,1984
3. Chemical Bonds and Bond Energy;Sanderson,1976
4. Theoretical Models of Chemical Bonding, Part 2: The Concept of the Chemical Bond,1990
5. Molecular Spectra and Molecular Structure, I. Spectra of Diatomic Molecules;Herzberg,1950