1. Standard Methods for the Examination of Water and Wastewater;APHA,1985
2. Hydrodynamic characterization of horizontal-flow anaerobic immobilized sludge (HAIS) reactors;Cabral,1995
3. Anaerobic treatment of piggery wastewater in UASB reactors;de Oliveira,1995
4. Utilization of immobilized anaerobic sludge in start-up of up-flow anaerobic sludge blanket (UASB) reactors;Del Nery,1987
5. Volatile acids by direct tritation;Dilallo;J. WPCF,1961