© 2006 The Authors Journal compilation © 2006 Blackwell Publishing Ltd, 9600 Garsington Road, Oxford, OX4 2DQ, UK and 350 Main St, Malden, MA, 02148, USA 1643 Blackwell Publishing Ltd Oxford, UK TWEC World Economy 0378-5920 © 2006 Blackwell Publishers Ltd (a Blackwell Publishing Company) De ember 2006 29 12riginal Article MONETARY and ECONOMIC INTEGRATION PAUL DE GRAUWE an ZHAOYON ZHANG Introdu...