TY  - JOUR 
T1  - Preliminary data on the feeding habits of the freshwater stingrays Potamotrygon falkneri and Potamotrygon motoro (Potamotrygonidae) from the Upper Paraná River basin, Brazil
JO  - Biota Neotropica
A1  - Silva, Thiago Buosi
A1  - Uieda, Virgínia Sanches
SN  - 1676-0603
UL  - 10.1590/S1676-06032007000100027
VL  - 7 
Y1  - 2007
PB  - Brasil 
ER  -