Fogliatto, Juarez, and Henrique Walter Pinotti. “Epidemiological Features of Human Hydatic Disease in the State of Rio Grande Do Sul (Brasil)”. Revista Do Instituto De Medicina Tropical De São Paulo, vol. 9, no. 6, Dec. 1967, pp. 415-8, https://revistas.usp.br/rimtsp/article/view/201863.