1. Ainsworth, M., et al. (2000). Accelerating an AIDS vaccine for developing countries: Recommendations for the World Bank. Washington DC: World Bank.
2. Althammer, W., & Buchholz, W. (1993). Lindahl-equilibria as the outcome of a non-cooperative game. A reconsideration. European Journal of Political Economy, 9, 399–405.
3. Andreoni, J. (1998). Toward a theory of charitable fund-raising. Journal of Political Economy, 106, 1186–1213.
4. Becker, G. (1974). A theory of social interactions. Journal of Political Economy, 82, 1063–1093.
5. Bergstrom, T., Blume, L., & Varian, H. (1986). On the private provision of public goods. Journal of Public Economics, 29, 25–49.