Belém, P. A. D., M. R. de Oliveira, and C. R. Padovani. “Revaluation of the Film Test As a Screening Test for’ Eurytrema Sp Infection in Cattle”. Brazilian Journal of Veterinary Research and Animal Science, vol. 29, no. 2, Dec. 1992, pp. 181-4, doi:10.11606/issn.1678-4456.bjvras.1992.51982.