1. The use of electronic counter for determining the number of cells in milk;Cullen;Vet. Record,1965
2. A method of counting cells in milk using an electronic cell counter;Cullen;Vet. Record,1966
3. Bacterial count and cell differentiation;Duitschaever;Nature,1965
4. Use of a modified milk quality test on refrigerated milk and comparison with other mastitis tests;Elliot;J. Milk Food Technol.,1967
5. Goulden, C. R 1952. Methods of Statistical Analysis. 2nd ed. John Wiley and Sons, Inc., New York; Chapman & Hall Ltd., London.