1. Andersen, P. E. and Just, A. 1983.Tabeller over foderstofferes sammensœtning m. m. Kvœg-Svin, 102Det kgl danske Landhusholdningsselskab.
2. ARC. 1980.The nutrient requirements of ruminant livestock, 351Commonwealth Agric. Bureau.
3. Saliva secretion and its relation to feeding in cattle
4. Saliva secretion and its relation to feeding in cattle
5. The digestion of hay administered to cows through rumen fistulas