J.C. Woodworth, M.D. Tokach, J.L. Nelssen, R.D. Goodband, P.R.O. Quinn and T.M. Fakler
Journal of Animal and Veterinary Advances 4 ( 7 ): 688 - 693 , 2005
J.A. Loughmiller, S.S. Dritz, J.L. Nelssen and M.D. Tokach
Journal of Animal and Veterinary Advances 4 ( 9 ): 805 - 817 , 2005