1. Leaching from feed and faeces, Dansk Orredfoder A/S;Alsted;Brande,1989
2. Review and Synthesis of the Environmental Impacts of Aquaculture;Anonymous,2002
3. Oxygénation de l’eau en Aquaculture Intensive;Belaud,1995
4. Waste production from aquaculture;Bergheim,1996
5. Effluent treatment for flow-through systems and European environmental regulations;Bergheim;Aquacult. Eng.,2003