1. Vincent AJ (2001) In: Stuetz R, Frechen FB (eds) Odors in wastewater treatment: measuring, modelling and control. Int. Water Assoc. Publishing, London, UK
2. Vicent T (2005) Residus. Informe sobre el canvi climàtic a Catalunya. In Gabarrell X (ed) Institut d’Estudis Catalans. Barcelona, Spain
3. Woodcock KE, Gottlieb M (2004) Kirk-Othmer encyclopedia. Wiley 12:377–386
4. Environmental Agency (2002) Guidance on gas treatment technologies for landfill gas engines. Draft for consultation
5. Gabriel D, Deshusses M (2004) Water Sci Technol 50:309–318