@book{50935,
	author = {Rudolph, Heinz P. and World Bank.},
	title = {Financial Sector Dimensions of the Colombian Pension System},
	publisher = {World Bank,},
	year = {c2007.},
	address = {Washington, D.C. :},
	url = {http://www.worldbank.icebox.ingenta.com/content/wb/2423}
}