1. Ishiyama, R., Studies on the Rajid Fishes (Rajidae) Found in the Waters around Japan, J. Shimonoseki Coll. Fish, 1958, vol. 7, pp. 193–394.
2. Stehmann, M., Breviraja caerulea spec. nov. (Elasmobranchii, Batoidea, Rajidae); A New Deepwater Skate and the First Record of the Genus in the North East Atlantic, Arch. Fisch Wiss, 1976, vol. 27, pp. 97–114.
3. Stehmann, M.F.W. and Merrett, N.R., First Records of Advanced Embryous and Egg Capsules of Bathyraja Skates from the Deep North-Eastern Atlantic, J. Fish. Biol., 2001, vol. 59, pp. 338–349.
4. Orlov, A., Cotton, C., and Byrkjedal, I., Deepwater Skates (Rajidae) Collected during the 2004 Cruises of R.V. “G.O. Sars” and M.S. e“Loran” in the Mid-Atlantic Ridge Areas, Cybium, 2006, vol. 30,suppl. 35–48.
5. Hubbs, C.L. and Ishiyama, R., Methods for Taxonomic Study and Description of Skates (Rajidae), Copeia, 1968, vol. 3, pp. 483–491.