Energy Security as multidimensional concept. Center for Applied Policy Research (CAP). Policy Analysis No.1.
Yearbook Internationale Politik: Sustainable Energy Security Policy. DGAP. Oldenburg Verlag.
Energy and security: regional and global dimensions. In: SIPRI Yearbook 2007 – Armaments, Disarmament and International Security. Oxford University Press.
A European strategy for sustainable, competitive and secure energy. Green Paper, Brussels.
Energy in a Changing World. Clingendael Energy Papers No.11.
Energy and Security: Toward a New Foreign Policy Strategy. Woodrow Wikson Press/John Hopkins University Press.
Global Security Brief 1: Oil Price Surge Threatens Economic Stability and National Security. Washington, D.C.: Worldwatch Institute.
The Future of Energy Policy. In: "Foreign Affairs", Vol. 82, No. 4, Juli/August 2003, 132-155.