1. Associate Professor, Center for Management Studies, IST, Technical Univ. of Lisbon, Ave. Rovisco Pais, 1049–001 Lisbon, Portugal; formerly, Assistant Professor, Center of Urban and Regional Systems (CESUR), IST, Technical Univ. of Lisbon, Ave. Rovisco Pais, 1049-001 Lisbon, Portugal; and Visiting Scholar, Public Utilities Research Center (PURC), Univ. of Florida, P.O. Box 117142, Gainesville, FL 32611–7142 (corresponding author).
2. Distinguished Service Professor of Economics and Director of Water Studies, Public Utilities Research Center (PURC), Univ. of Florida, P.O. Box 117142, Gainesville, FL 32611-7142.