- [Wiki]
http://en.wikipedia.org/wiki/Dipturus.
- [fishbase]
http://www.fishbase.org/summary/Dipturus-trachyderma.html.
- [Kooy2010]
Kooijman, S. (2010).
Dynamic Energy Budget theory for metabolic organisation.
Cambridge Univ. Press, Cambridge.
- [LicaCern2007]
Licandeo, R., Cerna, F., and Céspedes, R. (2007).
Age, growth, and reproduction of the roughskin skate, Dipturus
trachyderma, from the southeastern Pacific.
ICES Journal of Marine Science, 64:141--148. doi:10.1080/00288330.2001.9517045.