Oyster, R., Leipold, H.W., Troyer, D., Cash, W., Johnson, D. and Stowe, H.D. 1991. Laboratory studies of bovine progressive degenerative myeloencephalopathy in Brown Swiss cattle. The Bovine Practitioner. 1991, 26 (Sep. 1991), 77–83. DOI:https://doi.org/10.21423/bovine-vol1991no26p77-83.