1. Association of Official Agricultural Chemists, 1960. Official Methods of Analysis (9th edition). Washington, D. C.
2. The calcium-phosphorus relationship in the nutrition of the growing chick;Bethke;Poultry Sci.,1928
3. Calcium, phosphorus, and vitamin D interrelationships in the nutrition of growing chicks;Carver;Poultry Sci.,1946
4. Studies in mineral metabolism with the aid of artificial radioiosotopes;Cohn;III. The influence of vitamin D of the phosphorus metabolism of rachitic rats. J. Biol. Chem.,1939
5. Calcium and phosphorus requirements of growing turkeys and chickens;Formica;Poultry Sci.,1961