1. “Oxidation-Reduction Potential (ORP) regulation as a way to otpimize aeration and C, N and P removal”, Experimental basis and various full-scale axamples;Charpentier;Wat. Sci. Tech.,1989
2. Testing on-line monitors for ammonia, nitrate, orthophosphate and suspended solids in activated sludge sewage treatment plants;Andersen,1990
3. L'instrumentation dans les stations d'épuration urbaines;Wacheux,1992
4. Inventory and assessment of automatic nitrate analyserz for urban sewage works;Wacheux,1993
5. Super Oxydose, un automate pour les petite usines d'épuration;Wacheux,1995-1995