Alvarenga, F.M.S. & Lacerda, A.C.F. & Takemoto, R.M. & Pavanelli, G.C. (2009)
Absence of metazoan gill parasites on Potamotrygon falkneri (Potamotrygonidae) and its ecological implications in the upper Paraná River floodplain, Brazil. Pan-American Journal of Aquatic Sciences, 4(4), 589–592