1. Asche, H. 2009. Die SADC? Welche SADC? Afrikanische Regionalgemeinschaften im Übergang. In Entwicklung als Beruf, ed. T. Hanf, H.N. Weiler, and H. Dickow, 69–84. Baden-Baden: Nomos.
2. Axelrod, R. 1987. Die Evolution der Kooperation. München: R. Oldenbourg Verlag.
3. Axelrod, R., and R.O. Keohane. 1993. Achieving Cooperation Under Anarchy: Strategies and Institutions. In Neorealism and Neoliberalism: The Contemporary Debate, ed. D.A. Baldwin, 85–115. New York: Columbia University Press.
4. Axline, W.A. 1977. Underdevelopment, Dependence and Integration: The Politics of Regionalism in the Third World. International Organization 31 (1): 83–105.
5. Axline, W.A. 1994. Comparative Case Studies of Regional Cooperation Among Developing Countries. In The Political Economy of Regional Cooperation. Comparative Case Studies, ed. W.A. Axeline, 7–33. London: Pinter Publishers and Associated University Press.