Heller, A.F. (1949)
Parasites of cod and other marine fish from the Baie de Chaleur region. Canadian Journal of Research, 27, 243–264
Myers, B.J. (1959)
Parasites from elasmobranch hosts from the Magdalen Islands region of the Gulf of St. Lawrence. Canadian Journal of Zoology, 37(3), 245–246
DOI: 10.1139/z59-029
Williams, H.H. & Richards, D.H.H. (1968)
Observations on Pseudanisakis rotundata (Rudolphi, 1819) Mozgovoi, 1950, a Common but Little Known Nematode Parasite of Raia radiata Donovan in the Northern North Sea. Journal of Helminthology, 42(1–2), 199–219
DOI: 10.1017/S0022149X00027346
Sanmartín, M.L. & Alvarez, M.F. & Peris, D. & Iglesias, R. & Leiro, J. (2000)
Parasite community study of the undulate ray Raja undulata in the Ría of Muros (Galicia, northwest Spain). Aquaculture, 184(3–4), 189–201
DOI: 10.1016/S0044-8486(99)00332-4