Oyster, R., H. W. Leipold, D. Troyer, W. Cash, D. Johnson, and H. D. Stowe. “Laboratory Studies of Bovine Progressive Degenerative Myeloencephalopathy in Brown Swiss Cattle”. The Bovine Practitioner, vol. 1991, no. 26, Sept. 1991, pp. 77-83, doi:10.21423/bovine-vol1991no26p77-83.