Washington, DC : World Bank, Europe and Central Asia Region, Poverty Reduction and Economic Management Network, Febr. 2008 ; Halle (Saale) : Universitäts- und Landesbibliothek Sachsen-Anhalt, Febr. 2008
Washington, DC : World Bank, Europe and Central Asia Region, Poverty Reduction & Economic Management Sector Unit [u.a.], 2009 ; Halle (Saale) : Universitäts- und Landesbibliothek Sachsen-Anhalt, 2009