Chapter 5: North Sea(PDF). Environmental Guidebook on the Enclosed Coastal Seas of the World. International Center for the Environmental Management of Enclosed Coastal Seas. 2003 [2008-11-24]. (原始内容(PDF)存档于2008-12-17).
Helland-Hansen, Bjørn; Fridtjof Nansen. IV. The Basin of the Norwegian Sea.. Report on Norwegian Fishery and Marine-Investigations Vol. 11 No. 2. Geofysisk Institutt. 1909 [2009-01-09]. (原始内容存档于2009-01-14).
web.archive.org
Helland-Hansen, Bjørn; Fridtjof Nansen. IV. The Basin of the Norwegian Sea.. Report on Norwegian Fishery and Marine-Investigations Vol. 11 No. 2. Geofysisk Institutt. 1909 [2009-01-09]. (原始内容存档于2009-01-14).
Chapter 5: North Sea(PDF). Environmental Guidebook on the Enclosed Coastal Seas of the World. International Center for the Environmental Management of Enclosed Coastal Seas. 2003 [2008-11-24]. (原始内容(PDF)存档于2008-12-17).