Vidotto, O. (1997) “Occurrence of antibodies anti-Toxoplasma gondii in equine from four States (SP, PR, MS and MT) killed in Apucarana City, Paraná State, Brazil”., Semina: Ciências Agrárias, 18(1), pp. 9–13. doi: 10.5433/1679-0359.1997v18n1p9.