Det geopolitiske polhavet Bind I-II : samtidsutfordringer i historisk belysnng Østreng, Willy Innbundet / 2025 / Bokmål
National Security and International Environmental Cooperation in the Arctic — the Case of the Northern Sea Route Østreng, Willy Digital bok / 2020 / Engelsk
Natural and Societal Challenges of the Northern Sea Route A Reference Work Østreng, Willy Innbundet / 1999 / Engelsk
Natural and Societal Challenges of the Northern Sea Route A Reference Work Østreng, Willy Heftet / 2010 / Engelsk
National Security and International Environmental Cooperation in the Arctic — the Case of the Northern Sea Route Østreng, Willy Innbundet / 1998 / Engelsk
National Security and International Environmental Cooperation in the Arctic — the Case of the Northern Sea Route Østreng, Willy Heftet / 2012 / Engelsk
