[1]
J. P. C. B. D. Silva and M. R. D. Carvalho, “Systematics and morphology of Potamotrygon orbignyi (Castelnau, 1855) and allied forms (Chondrichthyes: Myliobatiformes: Potamotrygonidae)”, Zootaxa, vol. 3982, no. 1, pp. 1–82, Jul. 2015.