J. CHANONA, J. RIBES, A. SECO y J. FERRER D. Simple Rule-Based Algorithm for Optimizing Volatile Fatty Acids Production in Primary Sludge Fermentation Schemes REVISTA: Journal of Environmental Engineering (ASCE)Título: Simple Rule-Based Algorithm for Optimizing Volatile Fatty Acids Production in Primary Sludge Fermentation Schemes REVISTA: Journal of Environmental Engineering (ASCE) Journal of Environmental Engineering-Asce. 2006. ISSN:0733-9372