1. Swalin, R.A., in: Thermodynamics of Solids, John Wiley & Sons, 1962.
2. Gibbs, J., in: The Collected Works of J. Willard Gibbs Vol. 1, New York: Langman, Green and Co, 1928.
3. Hondros, E.D.: Acta Metall. 16 (1968) 1377.
4. Blakely, J.M.: CRC Critical Rev. Solid State Mater. Sci. 7 (1978) 333.
5. Blakely, J.M.: Segregation to Surfaces, Dilute Alloys of Transition Metals, in: Chemistry and Physics of Solid Surfaces, Vol. II, Vanselow, R. (ed.), Boca Raton: CRC Press, 1979, p. 253.