1. Barrett, S. (1994). Self enforcing international environmental agreements. Oxford Economic Papers 46: 878?894.
2. Barrett, S. (1997). Heterogeneous international environmental agreements. In C. Carraro (Ed.), International environmental negotiations. Strategic policy issues. Cheltenham: Edward Elgar.
3. Botteon, M. and Carraro, C. (1997). Burden-sharing and coalition stability in environmental negotiations with asymmetric countries. In C. Carraro (Ed.), International environmental negotiations. Strategic policy issues. Cheltenham: Edward Elgar.
4. Botteon, M. and Carraro, C. (1998). Environmental coalitions with heterogeneous countries: Burden-sharing and carbon leakage. In A. Ulph (Ed.), Environmental policy, international agreements and international trade. Oxford: Oxford University Press.
5. Carraro, C. and Siniscalco, D. (1993). Strategies for the international protection of the environment. Journal of Public Economics 2: 309?328.