4[11]Hoekman, B. and Kostecki, M.. The Political Economy of the World Trading System from GATT to WTO, Oxford University Press, 1995.
5[12]Markusen, J.. Trade in Producer Services-Issues Involving Returns to Scale and the International Division of Labour. The Institute for Research on Public Policy, 1986.
6[13]OECD. The Service Economy, OECD: Paris, 2000.
7[14]OECD. Services: Statistics on Value Added and Employment,OECD: Paris, 2000.
8[15]UNCTAD. Handbook of Statistics, http://www.unctad.org.
9[16]WTO. International Trade Statistics, 2003http://www.wto.org,.
10[17]WTO. International Trade Statistics, 2002, http://www.wto.org.
3Peter Egger, MichaeI Pfaffermayr. The Pure Effects of European Integration on Intra-EU Core and Periphery Trade[J]. Working Paper in Economics, 2002 ( 1 ).
