1. Volatile fatty acids in the digestive tract of the fowl;Annison;Br. J. Nutr.,1968
2. The microscopic anatomy of the digestive tract of Gallus domestlcus;Calhoun;Iowa State College J. Sci.,1932
3. Vitamin B and its analogues in the gut contents of germ-free and conventional chicks;Coates,1963
4. Estudi dels ritmes d'activitat motora del ratoli aïllat;Díez,1983
5. Linear Models, An Introduction;Gutman,1982