Paravitellotrema overstreeti n. sp. (Digenea: Hemiuridae) from the Colombian freshwater stingray Potamotrygon magdalenae Dumeril. Proceedings of the Helminthological Society of Washington, 46(1), 52–54
Evolution of Neotropical freshwater stingrays and their parasites: taking into account space and time. Unpublished PhD dissertation, University of Toronto, Toronto.
