1. Lippmann, F., Ann. Chem. Phys., 1875, vol. 5, p. 494.
2. Gibbs, J.W., The Scientific Papers of J. Willard Gibbs, N.Y.: Longmans and Green, 1931, vol. 1, p. 315.
3. Shuttleworth, R., Proc. Phys. Soc., 1959, vol. A 63, p. 444.
4. Udin, H., Shaler, A.J., and Wulff, J., Metall. Trans. AIME, 1949, vol. 185, p. 186.
5. Eriksson, J.C., Surface Sci., 1969, vol. 14, p. 221.