S. R. R. Lucas, M. K. Hagiwara, A. Reche Jr., and P. M. L. Germano, “Ocurrence of antibodies to Toxoplasma in cats naturally infected with feline immunodeficiency virus”, Braz. J. Vet. Res. Anim. Sci., vol. 35, no. 1, pp. 41–45, Jan. 1998, doi: 10.1590/S1413-95961998000100008.