{{Cite journal| volume = 28| issue = 1| pages = 187–194| last1 = Verbanck| first1 = M.A.| last2 = Ashley| first2 = R.M.| last3 = Bachoc| first3 = A.| title = International Workshop On Origin, Occurrence And Behavior Of Sediments In Sewer Systems – Summary Of Conclusions| journal = Water Research| date = 1994}}