1. J. N. Israelachvili, Intermolecular and Surface Forces (Academic Press, London, 1991).
2. R. J. Hunter, Foundations of Colloid Science (Oxford University Press, Oxford, 2001), Chap.10.
3. H. Ohshima, Theory of Colloid and Interfacial Electric Phenomena (Elsevier, New York, 2006).
4. H.-J. Butt, K. Graf, and M. Kappl, Physics and Chemistry of Interfaces, 3rd ed. (Wiley-VCH Verlag GmbH, Weinheim, 2013).
5. Ion-specific hydration effects: Extending the Poisson-Boltzmann theory