1. Evaluation of activated biofiltration and activated biofiltration/activated sludge technologies;Arora;Journal-Water Pollution Control Federation,1987
2. Pilot-plant experiments on anaerobic treatment of wastewater from a fish processing plant;Balslev-Olsen;Water Science and Technology,1990
3. Use of the upflow sludge blanket (USB) reactor concept for biological wastewater treatment, especially for anaerobic treatment;Lettinga;Biotechnology and Bioengineering,1980