Friggens, M.M. & Duszynski, D.W. (2005)
Four new cestode species from the spiral intestine of the round stingray, Urobatis halleri, in the northern Gulf of California, Mexico. Comparative Parasitology, 72(2), 136–149
DOI: 10.1654/4121

Upton, S.J. & Gardner, S.L. & Duszynski, D.W. (1988)
The round stingray, Urolophus halleri (Rajiformes: Dasyatidae), as a host for Eimeria chollaensis sp.nov. (Apicomplexa: Eimeriidae). Canadian Journal of Zoology, 66(9), 2049–2052
DOI: 10.1139/z88-301