1. Barros, P., Mata, J., 1997. Competition policy in Portugal. CEPR Discussion Paper 1441. Forthcoming in: Martin, S. (Ed.), European Competition Policies. Elsevier-North Holland.
2. Incentives to form coalitions with Bertrand competition;Deneckere;Rand Journal of Economics,1985
3. Horizontal mergers – an equilibrium analysis;Farrell;American Economic Review,1990
4. Horn, H., Persson, L., 1996. Endogenous mergers in concentrated markets. CEPR Discussion Paper 1544, December.
5. Lopes, M., 1996. Stable mergers and cartels involving asymmetric firms. Universidade Nova de Lisboa, mimeo.