1. Glycerol ethers in colostrum and milk from cow, goat, pig, and sheep;Ahrne;J. Dairy Sci.,1979
2. Association of Official Analytical Chemists Inc. (AOAC) (1990). “Official Methods of Analyses of the Association of Official Analytical Chemists” (K. Hydrich, ed.), 15th ed., part 2.
3. Sensitive colorimetric determination of cholesterol in dairy products;Bachman;J. Assoc. Off. Anal. Chem.,1976
4. Seasonal and regional variation in milk composition in the U.S.;Barbano,1990