Paulo Gonzaga de Lacerda, J., Franco de Lima Vieira, E., Sáez Martin, B. and Souto Giusti, L. 1971. Isolation and identification of poliovirus in São Paulo, Brazil, from 1967 to 1970. Instituto Adolfo Lutz Journal - RIAL. 31, 1-2 (Dec. 1971), 21–25. DOI:https://doi.org/10.53393/rial.1971.31.37001.