Institution: | 1. Department of Applied Mathematics , University of Trieste , Piazzale Europa 1, 34127 Trieste, Italy bacinel@units.it;3. Imperial College Business School , Imperial College London , South Kensington Campus, London SW7 2AZ, UK;4. Department of Applied Mathematics , University of Trieste , Piazzale Europa 1, 34127 Trieste, Italy |