Mayes, M.A. & Brooks, D.R. & Thorson, T.B. (1981)
Two new tetraphyllidean cestodes from Potamotrygon circularis Garman (Chondrichthyes: Potamotrygonidae) in the Itacuaí River, Brazil.
Proceedings of the Helminthological Society of Washington, 48(1), 38–42