1. Neutralto-ground voltage problems with dairy cows. Dairy Fact Sheet 21;Appleman,1978
2. Dairy Cattle: Principles, Practices, Problems, Profits;Bath,1978
3. Bodman, G. R., L. E. Stetson, and H. Shull. 1981. Investigations of extraneous voltages in Nebraska dairies. ASAE Paper No. 81-3510. Am. Soc. Agric. Eng., St. Joseph, MI.
4. A note on the occurrence of electrical shocks from milking machines and their possible effects on mastitis;Churchward;Aust. Vet. J.,1948
5. Cloud, H. A., R. D. Appleman, and R. J. Gustafson. 1980. Stray voltage problems with dairy cows. N. Central Reg. Publ. 125. Univ. Minnesota, St. Paul.