1. Fiber wall digestion of dairy cattle manure;Jones,1977
2. Fuel and fertilizer production from dairy manure;Feddes,1980
3. Water pollution research — a key to wastewater management;Stander;J. Water Poll. Control Fed.,1966
4. Use of the upflow sludge blanket reactor concept for biological wastewater treatment, especially for anaerobic treatment;Lettinga;Biotech. Bioengr,1980
5. The anaerobic filter for waste treatment;Young;J. Water Poll. Control Fed.,1969