1. O. Azuara, 2003 . "Mexican defined contribution pension system: Perspective for low income workers" (Background Paper for Keeping the promise of social security in Latin America). Washington, DC, World Bank.
2. F. Escobar, 2003 . "Pension reform in Bolivia: A review of approach and experience" (Background Paper for Keeping the promise of social security in Latin America). Washington, DC, World Bank.