Sharks and batoids (Subclass Elasmobranchii) caught in the industrial fisheries off the Brazilian North coast. Revista Nordestina de Biologia, 27(1): 120-142
Diet of the freshwater stingray Potamotrygon motoro (Chondrichthyes: Potamotrygonidae) on Marajó Island (Pará, Brazil). Revista Brasileira de Biologia, 70(1), 155–162
Factors affecting the distribution and abundance of freshwater stingrays (Chondrichthyes: Potamotrygonidae) at Marajó Island, mouth of the Amazon River. Pan-American Journal of Aquatic Sciences, 4(1), 1–11
Freshwater stingray diversity (Chondrichthyes Potamotrygonidae) in the Amazon estuary. (Diversidade de raias de água doce (Chondrichthyes:Potamotrygonidae) no estuário Amazônico). Arquivos de Ciências do Mar, 41(2), 82–89
Reproductive biology of Potamotrygon scobina Garman, 1913 (Chondrichthyes: Potamotrygonidae) in the Marajó Bay region, Pará, Brazil [Abstract]. American Elasmobranch Society 21th Annual Meeting, Tampa, Florida
Preliminary Observations on the Feeding of the Freshwater Stingrays Potamotrygon orbignyi, Potamotrygon scobina and lesiotrygon iwamae (Chondrichthyes: Potamotrygonidae) in the Cotijuba Island Region - Pará - Brazil. Symposium Proceedings International Congress on the Biology of Fish, Manaus, Brazil: 41–52