1. ANPA, Italian Environmental Protection Agency, 2001. Manual of methods for compost analysis.
2. ANPA, Italian Environmental Protection Agency, 2003. Microbiological methods of analysis of compost. Manuals and Guidelines 20/2003.
3. Delgado, A., Garcia, J.L., Sales, D., Solera del Rio, R., 2004. Co-composting process of sewage sludge and different proportions of OFMSW. In: Sustainable Organic Waste Management for Environmental Protection and Food Safety, FAO European Cooperative Research.
4. Use of MSW compost, dried sewage sludge and other wastes as partial substitutes for peat and soil;Ingelmo;Bioresource Technology,1998
5. IRSA, Italian Water Research Institute-National Research Council, 2006. Methods for the analytical determinations.