1. Report on the Welfare of Farmed Fish;Anon.,1996
2. O2 key to high density;Anon.;Fish Farmer Int.,1999
3. A Code of Practice for European Aquaculture;Anon.,2000
4. Code of Practice for the Production of Rainbow Trout. British Trout Association, London;Anon.,2002
5. Farm Certification Standards. Quality Trout UK, London;Anon.,2003