1. American Public Health Association. 1971., Standard Methods for the Examination of Water and Wastewater. 13th Edition, p. 495,
2. Methods of Analysis,1960
3. Use of ultrafiltration/reverse osmosis systems for the concentration and fractionation of whey;Fenton-May;J. Food Sci.,1971
4. Fenton-May, R. I. 1971. The use of reverse osmosis and ultrafiltration in the food industry. Ph.D. Thesis, University of Wisconsin, Madison.
5. Direct analysis of lactose in milk and serum;Marier;J. Dairy Sci.,1959