Petzhold, Sylio Alfredo, et al. “Neutralizing Antibodies to Bovine Herpesviruses Types 1 (BHV-1) and 5 (BHV-5) Induced by an Experimental, Oil-Adjuvanted, BHV-1 Vaccine”. Brazilian Journal of Veterinary Research and Animal Science, vol. 38, no. 4, Jan. 2001, pp. 184-7, https://doi.org/10.1590/S1413-95962001000400007.