{{Cite conference| last1 = Robert| first1 = P.| last2 = Gromaire| first2 = M.C.| last3 = De Gouvello| first3 = B.| last4 = Chebbo| first4 = G.| title = The impact of roofing materialq on metal runoff in urban stormwater. (communication par affiche)| booktitle = International conference Towards the City Surface of Tomorrow| location = Vienne, Autriche| date = 2006}}