1. University of Leeds, School of Earth & Environment, Woodhouse Lane, Leeds LS2 9JT, UK
2. Kedge Business School (Bordeaux), 680 Cours de la Liberation, 33405 Talence Cedex, France
3. Kedge Business School, Domaine de Luminy – BP 921, 13288 Marseille Cedex 9, France
4. Queen's University Belfast, UK, Centre for Statistical Science and Operational Research (CenSSOR), David Bates Building, University Road, Belfast BT7 1NN, Northern Ireland, UK