GUSTAVO PIGA is Professor of Economics at the University of Rome Tor Vergata, Italy, and Managing Editor of the Rivista di Politica Economica. He is a member of the Scientific Committee of EUROMTS Ltd. and EC and OECD expert on Public Procurement. He is the author of Derivatives in Public Debt Management. KHI V. THAI specializes in public budgeting, financial management and public procurement. He is Editor or Editorial Board Member of several academic journals, and has written or edited numerous books, articles, technical reports and is Principal Investigator of several gr