Internet, http://lnweb18.worldbank.org/External/lac/lac.nsf/Countries/Mexico/8E8A3238F5EDC503852569DD007B8A94?OpenDocument,
20/06/2003
Mexico : a comprehensive development agenda for the new era / Ed. By Marcelo M. Giugale,
Olivier Lafourcade and Vinh H. Nguyen, the World Bank, 2001