{{Cite conference| last1 = Kafi-Benyahia| first1 = M.| last2 = Gromaire-Mertz| first2 = M.C.| last3 = Chebbo| first3 = G.| title = Spatial evolution of the characteristics of urban wastewater in combined sewers| booktitle = 18th European Junior Scientist Workshop on sewer Processes and Networks| location = Almograve, Portugal| date = 2003}}