Cunha, E. M. S., Z. M. P. Peixoto, I. Kotait, J. G. Bersano, M. M. Ishizuka, and M. R. Baccaro. “Efficacy of an Inactivated Aujeszky’s Disease Virus Vaccine: Experimental Infection of Pigs”. Brazilian Journal of Veterinary Research and Animal Science, vol. 35, no. 4, Jan. 1998, pp. 188-94, doi:10.1590/S1413-95961998000400009.