1. Standard Methods for the Examination of Water and Waste Water;Anon,1975
2. Kinetic improvements in the production of methane from cellulosic residues;Clausen;Energy Biomass Wastes,1983
3. Anaerobic fermentation of semi-solids and solids substrates;De Baere,1984
4. La fermentación metánica;Demeyer,1985
5. Agricultural uses of digested effluent;Demuynk,1984