GONÇALVES, Ernani Ibira; PINTO, Aramis Augusto. Efficiency test for foot and mouth disease vaccines. I. Reduction in C index variation by increasing the number of guinea pigs (Cavia cavia). Brazilian Journal of Veterinary Research and Animal Science, São Paulo, Brasil, v. 30, n. 2, p. 137–140, 1993. DOI: 10.11606/issn.1678-4456.bjvras.19932.52025. Disponível em: https://revistas.usp.br/bjvras/article/view/52025.. Acesso em: 28 apr. 2024.