M. T. Bahia, R. W. A. Vitor, R. P. Caldas, C. M. F. Antunes, and C. de A. Chiari, “Toxoplasma - specific IgG antibodies avidity ELISA and its role in the differentiation between recent and chronic toxoplasmosis in goats”, Braz. J. Vet. Res. Anim. Sci., vol. 32, no. 1, pp. 11–16, Mar. 1995, doi: 10.11606/issn.1678-4456.bjvras.1994.52083.