{{Cite journal| volume = 82| issue = 5| pages = 219–226| last1 = Heduit| first1 = A.| last2 = Coquery| first2 = M.| last3 = Thevenot| first3 = D.R.| title = Oxido reduction potential in biological treatment of waste water| journal = Tech. Sci. Munic.| date = 1987}}