1. Association of Official Agricultural Chemists, 1960. Official Methods of Analysis. 9th Edition, Washington, D.C.
2. The effect of restricted feeding time on food intake, body weight and egg production;Burmester;Poultry Sci.,1939
3. Studies with laying hens;Combs;2. Energy restriction. Poultry Sci.,1961
4. Effects of energy restriction on laying hens;Donaldson;Poultry Sci.,1961
5. A simple method for the isolation and purification of total lipids from animal tissue;Folch;J. Biol. Chem.,1957