M. Villano, S. Lampis, F. Valentino, G. Vallini, M. Majone, and M. Beccari, “EFFECT OF HYDRAULIC AND ORGANIC LOADS IN SEQUENCING BATCH REACTOR ON MICROBIAL ECOLOGY OF ACTIVATED SLUDGE AND STORAGE OF POLYHYDROXYALKANOATES”, Chemical Engineering Transactions, vol. 20, pp. 187-192, Apr. 2010.