1. Arnould, R., 1961. Utilization des protéines pour la croissance. Thesis, Univ. Louvain.
2. Official Methods of Analysis,1980
3. The utilization of dietary energy by poultry;Davidson;1. A study of the algebraic method of determining the productive energy of poultry feeds. J. Sci. Food Agric.,1957
4. A fundamental formula in the statistics of biological assay, and some applications;Fieller;Q. J. Pharmacol.,1944
5. Effect of energy restriction on total heat production, basal metabolic rate, and specific dynamic action of food in rats;Forsum;J. Nutr.,1981