1. Internal Rotation of Molecules, Orville-Thomas, W.J., Ed., London: Wiley, 1974.
2. Mizushima, S., Structure of Molecules and Internal Rotation, New York: Academic, 1954.
3. Bader, R.F.M., Atoms in Molecules: a Quantum Theory, Oxford: Clarendon, 1994.
4. Konformatsionnyi analiz uglevodorodov i ikh proizvodnykh (Conformational Analysis of Hydrocarbons and Their Derivatives), Vereshchagin, A.N., Kataev, V.E., Bredikhin, A.A., Timosheva, A.P., Kovylyaeva T.I., and Kazakova, E.Kh., Eds., Moscow: Nauka, 1990.
5. Eliel, E.L., Allinger, N.L., Angyal, S.J., and Morrison, G.A., Conformational Analysis, New York: Interscience, 1965.