1. Ottewill RH, Rance DG (1977) Croatica Chem Acta 50:65
2. Bier M (1967) Electrophoresis ? Theory, Method and Applications, Academic Press, New York
3. Shaw DJ (1969) Electrophoresis, Academic Press, London
4. Hunter RJ (1981) Zeta Potential in Colloid Science ? Principles and Applications, Academic Press, New York
5. Allen LH, Matijevi? E (1969) J Coll Sci 31:289