Igor Lysenko u. Christoph Zockler: The 25 Largest Unfragmented Areas in the Arctic. A report produced by UNEP-WCMC and UNEP/GRID-Arendal for WWF Arctic Programme, pdf-Version, Dezember 2001. S. 64 (Bolshezemelskaya Tundra), 74 (Novaya Zemlya), 82 (Svalbard), 89 (Kola Peninsula), 107 (Malazemelskaya Tundra).