Template:Koefoed, 1956
- Koefoed, E. 1956. Theragra finnmarchica n. sp., Gadus poutassou, Risso, Raia spinicauda, Jensen, Eumicrotremus spinosus subspec. nov. eggvinii. Fiskeridirektoratets Skrifter, Serie Havundersøkelser. Report on Norwegian Fishery and Marine Investigations 11(5): 1–24 + 1, Pls. 1–3. PDF.