Alves, J. R. A.; Limeira, C. H.; Lima, G. M. de S.; Pinheiro, R. R.; Alves, F. S. F.; Santos, V. W. S. dos; Azevedo, S. S. de; Alves, C. J. Epidemiological Characterization and Risk Factors Associated With Lentiviral Infection of Small Ruminants at Animal Fairs in the Semiarid Sertão Region of Pernambuco, Brazilian Semiarid. Sem. Ci. Agr. 2017, 38, 1875-1886.