Lonardoni, A.P. & de Oliveira, E.F. & Goulart, E. (2009)
Trophic ecomorphology of Potamotrygon falkneri and Potamotrygon motoro (Chondrichthyes - Potamotrygonidae) on the upper Paraná river floodplain, Brazil.
Pan-American Journal of Aquatic Sciences, 4(4), 436–445