Bibliografie:
1.Srikantia  - The Use Of Biological Value Of A Protein In Evaluating Its Quality
 For Human Requirements;
2.Darragh A. J., Schaafsma G., Moughan P. J. - Impact of amino acid availability 
 on the protein digestibility corrected amino acid score;
3. Balch P., Balch, J.,  2000 - Prescription For Nutritional Healing, Avery Books;
4. Murray M., Pizzorno, J., 1991 -  Encyclopedia of Natural Medicine, Prima Publishing;
5. Gelenberg A.J., 1980 - Tyrosine For The Treatment of Depression, American Journal of
 Psychiatry, 137(5): 622-3;
6. * * * - Dutch Foundation on Nutrition and Health Utrecht, Aspects of Milk Proteins
 in Comparison with Other Proteins;