1. Jenness, R., and S. Patton, “Principles of Dairy Chemistry”, 1st ed., John Wiley and Sons, New York, 1959, p. 38.
2. Webb, B. H., and A. H. Johnson, “Fundamentals of Dairy Chemistry”, 1st ed., Avi Publishing Co., Inc., Westport, Conn., 1965, p. 138–148.
3. Morrison, W. R., E. L. Jack and L. M. Smith, JAOCS42, 1142–1147 (1965).
4. Baliga, B. S., and K. P. Basu, Indian J. Dairy Sci.9, 25–35 (1956).
5. Rawat, R. S., Dairy Sci. Abstracts28, 263 (1966).