Pangty K, Singh S, Pandey AB, Somvanshi R. Preliminary binary ethylenimine (BEI) inactivated bovine papillomavirus (BPV) vaccine trial against cutaneous warts in bull calves: a pathological assessment. Brazilian Journal of Veterinary Pathology. 2010;3(2):105-110. doi:10.24070/bjvp.1983-0246.003019