1. Diatomic Molecules According to the Wave Mechanics. II. Vibrational Levels
2. J.Z.H. Zhang, Theory and Application of Quantum Molecular Dynamics (World Scientific, Singapore, 2010).
3. P.W. Atkins and J. De Paula, Atkins’ Physical Chemistry, 11th ed. (Oxford University Press, Oxford, 2018).
4. P. Atkins and R. Friedman, Molecular Quantum Mechanics, 4th ed. (Oxford University Press, New York, 2005).
5. L. Piela, Ideas of Quantum Chemistry, 2nd ed. (Elsevier, San Diego, 2013).