Affiliation: | 1. International Institute for Applied Systems Analysis (IIASA), IIASA, Schlossplatz 1, A-2361, Laxenburg, Austria 4. Vienna University of Technology (TU WIEN), TU Wien, Gusshausstrasse 25, A-1010, Vienna, Austria 2. RAND, Santa Monica, CA, USA 3. The Frederick S. Pardee Center for the Study of the Longer-Range Future, Boston University, Boston, MA, 02215, USA
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