1. Austerman, S.B. (1964) Self-diffusion in beryllium oxide. J. NucL Mater., 14, 248–257.
2. Azaroff, L.V. (1961) Role of crystal structure in diffusion. I. Diffusion in closest-packed crystals. J. Appi. Phys., 32, 1658–1662.
3. Bader, R.F.W. (1981) The nature of chemical binding, in The Force Concept in Chemistry, edited by B.M. Deb, pp. 39 - 136. Van Nostrand-Reinhold, New York.
4. Bader, R.F.W. (1985) Atoms in molecules. Accounts of Chem. Res., 18, 9–15.
5. Bader, R.F.W. (1988) From Schròdinger to atoms in molecules. Pure Appi Chem, 60, 145–155.