accessed 29 July 2006) C. Michael Hogan (2008) [https://web.archive.org/web/20081224205716/http://globaltwitcher.auderis.se/artspec_information.asp?thingid=36084 Polar Bear: Ursus maritimus, globalTwitcher.com, ed. Nicklas Stromberg] David Roberts, Four Against the Arctic: Shipwrecked for Six Years at the Top of the World Website specifically dedicated to Edgeøya including background regarding geology, flora and fauna, photos. Svalbard Images (2008) Edgeøya Günter Schilder (1984) "Development and Achievements of Dutch Northern and Arctic Cartography in the Sixteenth and Seventeenth Centuries", in: Arctic''; Vol. 37, No. 4, December 1984. Svalbard place names database: Edgeøya in the Norwegian Polar Institute (URL accessed 29 July 2006) Islands of Svalbard Uninhabited islands of Norway