MOMBA, N. M. et al. Evaluation of the impact of disinfection processes on the formation of biofilms in potable surface water distribution systems. Repository of the University of Pretoria, 1998 [consulta 29-07-2015]. Disponible en: http://137.215.9.22/bitstream/handle/2263/3895/Momba_Evaluation%281998%29.pdf?sequence=1