1. Anderson, D. L., 1955. The energy value of poultry feeds. Proc. Cornell Nutrition Conference for Feed Manufacturers, pp. 5-10.
2. Studies of the metabolizable and productive en-ergy of glucose for the growing chick;Anderson;J. Nutrition,1958
3. Association of Official Agricultural Chemists, 1955. Official Methods of Analysis, 8th ed., Washington, D. C.
4. Determination of metabolizable energy in poultry foodstuffs and rations;Axelsson;Proc. 9th Worlds Poultry Congress,1951
5. The metab-olizable energy of poultry feeding stuffs in relation to their chemical composition;Carpenter;J. Sci. Food Agric.,1956