Institution: | 1. Warwick Business School, The University of Warwick, Coventry CV4 7AL, United Kingdom;2. Institut für Mathematik B, TU Graz, Steyrergasse 30, 8010 Graz, Austria;3. Department of Mathematics and Computer Science, TU Eindhoven, P.O. Box 513, 5600 MB Eindhoven, The Netherlands |