Hareide, N.R. & Carlson, J. & Clarke, M. & Clarke, S. & Ellis, J. & Fordham, S. & Fowler, S. & Pinho, M. & Raymakers, C. & Serena, F. & Séret, B. & Polti, S. (2007)
European shark fisheries: a preliminary investigation into fisheries, conversion factors, trade products, markets and management measures European Elasmobranch Association, Report: 71pp.

Fowler, S. & Raymakers, C. & Grimm, U. (2004)
Trade in and conservation of two shark species, portbeagle (Lamna nasus) and spiny dogfish (Squalus acanthias). BfN – Skripten 118