Uyguner, C.S., Bekbölet, M., “A Review on the Photocatalytic Degradation of Humic Substances”, Advances in Control of Disinfection By-Products in Drinking Water Systems, A. Nikolau, H. Selcuk, L. Rizzo (Derleyenler), Chapter 7.4., 419-446, NOVA Science Publishers Inc., NY, USA. 2007.