3Dick,R. and Dicke,H. , 1979,Patterns of Trade in Knowledge,in International Economic Development and Resource Transfer, (Ed.) Aierser, H. , Tobingen.
4Hoekman,B. 1995,Tentative First Steps :An Assessment of the Uruguay Round Agreement on Services,in W. Martin and A. Winters (eds.)The Uruguay Round and the Developing Economies,Washington DC:World Bank.
5Hoekman,B. and Kostecki,M. ,1995,The Political Economy of the World Trading System-From GATT to GATS,Oxford University Press.
6Linder,S. ,1961 ,An Essay on Trade and Transformation,Uppsala :Almquist & Wicksell.
7Peterson, J. and Barras, R. , 1987, Measuring International Competitiveness in Services, Service Industries Joumal, 7,131-142.
8Peterson,J. , 1988,Export Shares and Revealed Comparative Advantage :A Study of International Travel,Applied Economics, 20,351-365.
9Snape, R. , 1998, Reaching Effective Agreements Covering Services, in Krueger (ed)The WTO as an International Organization ,University of Chicago Press ,Chicago and London.
10Balassa, B. , 1965, Trade Liberalization and Revealed Comparative Advantage, Manchester School, 33,99-123.
