1. Norwegian Nutrition Act of 19 May 1933.
2. Regulations for hygiene and food. Hygiene regulations for production and supply, etc. of Foodstuffs. 8 July 1983. Norway. p. 1253.
3. Regulations on internal control systems to comply with the Nutrition Act (IK-Food 1994). Norway.
4. Operating conditions in food business. NMT Info D1 17.11.1995. Norway.
5. Nutrition hygiene regulations No. 1239-2005, 12 Nov 1997. Norway.