Stehmann, M. (1970)
Vergleichend morphologische und anatomische Untersuchungen zur Neuordnung der Systematik der nordostatlantischen Rajidae (Chondrichthyes, Batoidei). Archiv für Fischereiwissenschaft, 21(2), 73–164
Compagno, L.J.V. & Ebert, D.A. & Smale, M.J. (1989)
Guide to the sharks and rays of Southern Africa. New Holland Ltd., London 1989
Compagno, L.J.V. & Ebert, D.A. & Cowley, P.D. (1991)
Distribution of offshore demersal cartilaginous fishes (Class Chondrichthyes) of the west coast of southern Africa, with notes on their systematics. South African Journal of Marine Science, 11(1), 43–139, figs 1–24
DOI: 10.2989/025776191784287664
Herman, J. & Hovestadt-Euler, M. & Hovestadt, D.C. & Stehmann, M. (1995)
Contributions to the study of the comparative morphology of teeth and other relevant ichthyodorulites in living supraspecific taxa of chondrichthyan fishes. Part B: Batomorphii No. 1b: Order: Rajoidei - Family: Rajidae Genera and Subgenera: Bathyraja (with a deep-water, shallow-water and transitional morphotype) Psammobatis, Raja (Amblyraja), Raja (Dipturus), Raja (Leucoraja), Raja (Raja), Raja (Rajella) (with two morphotypes), Raja (Rioraja), Raja (Rostroraja), Raja lintea and Sympterygia. Bulletin de l'Institut Royal des Sciences Naturelles de Belgique, Biologie, 65, 237–307
Okamura, O. & Amaoka, K. & Takeda, M. & Yano, K. & Okada, K. & Chikuni, S. (1995)
Fishes collected by the R/V Shinkai Maru around Greenland. Japan Marine Fishery Resources Research Center, 304pp
Deynat, P.P. & Séret, B. (1996)
Le revêtement cutané des raies (Chondrichthyes, Elasmobranchii, Batoidea). I- Morphologie et arrangement des denticules cutanés. Annales des Sciences Naturelles – Zoologie et Biologie Animale, 17(2), 65–83
Deynat, P.P. (1998)
Le revêtement cutané des raies (Chondrichthyes, Elasmobranchii, Batoidea). II. Morphologie et arrangement des tubercules cutanés . Annales des Sciences Naturelles – Zoologie et Biologie Animale, 19(3–4), 155–172
DOI: 10.1016/S0003-4339(99)80004-5