1. SAS Users guide;Barr,1979
2. Microbiological procedures for the diagnosis of bovine mastitis;Brown,1969
3. The rapid abnormality indicator;Davis;Dairy Ind.,1947
4. The detection of subclinical mastitis by electrical conductivity measurements;Davis;Dairy Inc. Int.,1975
5. Methods of mastitis detection including the rolling ball viscometer and electrical conductivity meter;Duirs,1980