Journal Article
Valentine BA, Bildfell RJ, Packham D, Scott DW, Miller WH.  2012.  Alopecia areata in two black Angus cows.. Journal of veterinary diagnostic investigation : official publication of the American Association of Veterinary Laboratory Diagnosticians, Inc. 24(2):405-7. Abstract
Cebra CK, Cebra ML.  2004.  Altered mentation caused by polioencephalomalacia, hypernatremia, and lead poisoning.. The Veterinary clinics of North America. Food animal practice. 20(2):287-302,vi-vii. Abstract