*Hegsted, M. (1981). ''Urinary Calcium and Calcium Balance in Young Men as Affected by Level of Protein and Phosphorous Intake'', Journal of Nutrition, (111), S. 53. | *Hegsted, M. (1981). ''Urinary Calcium and Calcium Balance in Young Men as Affected by Level of Protein and Phosphorous Intake'', Journal of Nutrition, (111), S. 53. |