1. Ammonia and the anaerobic environment;Albertson;J. Wat. Pollut. Control Fed.,1961
2. Methane production from the effluent of the potato starch industry;van Bellegem;Biotechnol. Letters,1980
3. Anaerobic treatment of waste from the industries located in the ‘Veenkoloniën’-district;van Bellegem,1975
4. Ammonia toxicity in liquid piggery manure digestion;Braun;Biotechnol. Letters,1981
5. The potato starch industry and the wastewater problem;Drenth;TNO-projekt,1979