1. The artificial transmission of Besnoitia besnoiti (Marotel, 1912) from chronically-infected to susceptible cattle and rabbits;Bigalke;Onderstepoort J. Vet. Res.,1967
2. Sarcocystis of passerine birds: sexual stages in the opossum (Didelphis virginiana);Box;J. Wildl. Dis.,1980
3. The intermediate host spectrum in a Sarcocystis species of birds;Box;J. Parasitol,1982
4. Carvajal , H. 1981 Ciclo de vida de Sarcocystis columbididelphis n. sp. (Protozoa: Apicomplexa: Sarcocystidae) (Linneo 1758) entre la chucha Didelphis marsupialis y la torcaza común Columbina talpacoti (Temminick 1811). Diss., University of Valle, Colombia 37