Samara, S. I., E. G. Lima, and A. A. do Nascimento. “Monitoring of Enzootic Bovine Leukosis in Dairy Cattle from the Pitangueiras Region in São Paulo, Brazil”. Brazilian Journal of Veterinary Research and Animal Science, vol. 34, no. 6, Dec. 1997, pp. 349-51, doi:10.11606/issn.2318-3659.v34i6p349-351.