Canine distemper epizootic in lions, tigers, and leopards in North Americav. 6277–288
Appel, M. G., Yates, R. Y., Foley, G. L., Santinelli, S., Spelman, Lucy H., Miller, L. D., Arp, L. H., Anderson, M., Barr, M., Pearce-Kelling, S., Summers, B. A., and Bernstein, J. J. 1994. "Canine distemper epizootic in lions, tigers, and leopards in North America." Journal of Veterinary Diagnostic Investigation, 6 277–288.