1. L. W. Ban,Defect Diffusion Forum 143-147, 3 (1997).
2. R. Boyle,Experiments and Considerations about the Porosity of Bodies, in two Essays, p. 777, St. Paul’s Churchyard, London (1684).
3. A. Fick,Poggendorffs Annalen 94, 59 (1855);Phil. Mag. 10, 30 (1855).
4. H. J. V. Tyrrell,.J.Chem. Education 41, 397 (1964).
5. See, for example, T. Graham,Phil. Trans. Roy. Soc. 151, 183 (1861).