Moura, Roberto de Almeida, and Guillermo Contreras. 1955. “Isolation and Typing in Tissue Culture, of Nine Polio Virus Samples Ofrom Cases Observed in Sao Paulo. Preliminary Note”. Instituto Adolfo Lutz Journal - RIAL 15 (1-2):225-29. https://doi.org/10.53393/rial.1955.15.33292.