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A new species of Echinocephalus (Nematoda: Gnathostomidae) from Neotropical stingrays with comments on E. diasi. Journal of Parasitology, 67(3), 433–439
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Evolution of Neotropical freshwater stingrays and their parasites: taking into account space and time. Unpublished PhD dissertation, University of Toronto, Toronto.
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Amazon Fish Parasites (Second edition). Volume 1. Aquatic Biodiversity in Latin America, 1, PENSOFT Publishers, Sofia, 508pp