by Schantz, P.M, Steurer, F.J, Duprey, Z.H, Kurpel, K.P, Barr, S.C, Jackson, J.E, Breitschwerdt, E.B, Levy, M.G, Fox, J.C
Published in Journal of the American Veterinary Medical Association (15.04.2005)

by Porter, C.H., Steurer, F.J., Kreutzer, R.D.
Published in Transactions of the Royal Society of Tropical Medicine and Hygiene (01.01.1987)