1- Albrecht, J., (1998), Environmental regulation, comparative advantage and the Porter hypothesis, FEEM Nota di Lavoro, 17.99.
2- Albrecht, J., (1998a), Environmental Policy and Inward Investment Position of U.S. Dirty Industries, Inter-economics, July/August, 186-94.
3- Alpay, S., (2000), Does Trade Always Harm the Global Environment? A Case for Positive Interaction, Oxford Economic Papers, 52, 272-288.
4- Antweiler, W., Copeland, B.R., Taylor, M.S., (1998), Is Free Trade Good for the Environment, NBER Working Paper Series, No: 6707.
5- Baltagi, B. H., (2006), Estimating an economic model of crime using panel data from North Carolina, Journal of Applied Economics, 21: 543–547.
6- Baumert, K.A. and Kate, N., (2002), An architecture for climate protection. Published in building on the Kyoto Protocol: options for protecting the climate, World Resources Institute, available on line at http://climate.wri.org/pubs_pdf.cfm?PubID=3762 (30/10/2005).
7- Bowen, H., (1983), Changes in the International Distribution of Resources and Their Impact on US Comparative Advantage, Review of Economics and Statistics, Vol. 65:402-414.
8- Busse, Matthias, (2004), Trade, environmental regulations and the World Trade Organization: new empirical evidence, Policy Research Working Paper Series 3361, The World Bank.
9- Copeland, B.R. and Taylor, M.S., (2003), Trade, Growth and the Environment, Journal of Economic Literature, 42(1), 7–71.
10- Dessus, S. and Bussolo, M., (1998), Is There a Trade-off between Trade Liberalization and Pollution Abatement? A CGE Assessment Applied to Costa Rica, Journal of Policy Modelling, 20, 11-31.
11- Ekins, P., Folke, C. and Costanza, R., (1994), Trade, Environment and Development: The Issues in Perspective, Ecological Economics, 9, special issue.
12- Frankel, J. and Rose, A., (2002), In Is Trade Good or Bad for the Environment? Sorting out the Causality, NBER Working Paper No. 9021. NBER Research Associates.
13- Frankel, J.A. and Rose, A.K., (2002), Is Trade Good or Bad for the Environment? Sorting Out the Causality, National Bureau of Economic Research Working Paper, N.9201.
14- Jaffe, A. and Palmer, K., (1997), Environmental Regulation and Innovation: A Panel Data Study, Review of Economics and Statistics, 79, 610-619.
15- Jaffe, A. B., Peterson, S. R., Portney, P. R. & Stavins, R. N., (1995), Environmental Regulation and the Competitiveness of U.S. Manufacturing: What Does the Evidence Tell Us?, Journal of Economic Literature, Vol.23 (March 1995): 132-163.
16- Jaffe, A., Peterson, S., Portney, P. and Stavins, R., (1995), Environmental Regulation and the Competitiveness of U.S. Manufacturing: What does the Evidence tell Us?, Journal of Economic Literature, 33, 132-63.
17- Leamer, E. E., (1984), Sources of International Comparative Advantage: Theory and Evidence. Cambridge: MIT Press.
18- List, John And Co, Catherine (2000), The Effects of Environmental Regulations on Foreign Direct Investment, Journal of Environmental Economics and Management, 40(1), pp. 1-20.
19- Macrory, Patrick F.J. Appleton, Arthur E. and Plummer, Michael G., (2005), The World Trade Organization: Legal, Economic and Political Analysis,vol. 2. New York: Springer, pp. 137-170.
20- McGuire, M., (1982), Regulation, Factor Rewards, and International Trade, Journal of Public Economics, 17: 335-354.
21- Pesaran, M., (2004), General Diagnostic Tests for Cross Section Dependence in Panel, Cambridge Working Papers in Economics No. 0435 Faculty of Economics, University of Cambridge.
22- Pethig, R., (1976), Pollution, Welfare and Environmental Policy in the Theory of Comparative Advantage, Journal of Environmental Economics and Management, 2,160-169.
23- Porter, M. and Linde, C. van der (1995), Toward a new conception of the environment competitiveness relationship, Journal of Economic Perspectives, 9, 97-118.
24- Shortle, J. S. and Abler, D., (2001), Environmental Policies for Agricultural Pollution Control, CAB International Publishing, New York.
25- Siebert, H., (1977), Environmental Quality and the Gains from Trade, Kyklos, 30(4): 657-673.
26- Stewart, R. B., (1993), Environmental Regulation and International Competitiveness, Yale Law Journal, June, 102(8): 2039-2106.
27- Tobey, J., (1990), The Effects of Domestic Environmental Policies on Patterns of World trade: an Empirical Test, Kyklos, 43(2): 191-209.
28- Tobey, J.A., (1993), Effects of Domestic Environmental Policy on Patterns of International Trade, Shane, M.D. and H. van Witzke eds., The Environment, Government Policies, and International Trade: A Proceedings, USDA: Staff Report No. AGES 9314.
29- World Trade Organization (WTO) (1999). Special Studies –Trade and Environment.