R. Mitsuka, A. C. Beckner da Silva, I. T. Navarro, J. W. Breganó, and O. Vidotto, “Toxoplasma gondii: I. Evaluation of the virulence of eight strains”, Braz. J. Vet. Res. Anim. Sci., vol. 35, no. 1, pp. 29–31, Jan. 1998, doi: 10.1590/S1413-95961998000100005.