Pereira, O. A., et al. “Equine Encephalomyelitis in Conchas, São Paulo, Brazil; Hemagglutination Inhibition Reactions With Human and Equine Sera”. Revista Do Instituto De Medicina Tropical De São Paulo, vol. 5, no. 3, June 1963, pp. 149-51, https://revistas.usp.br/rimtsp/article/view/202468.