Washington, DC : World Bank, Development Research Group, Macroeconomics and Growth Team, Mar. 2008 ; Halle (Saale) : Universitäts- und Landesbibliothek Sachsen-Anhalt, Mar. 2008
Washington, DC : World Bank, Development Research Group, Macroeconomics and Growth Team, 2009 ; Halle (Saale) : Universitäts- und Landesbibliothek Sachsen-Anhalt, 2009
Washington, DC : World Bank, Development Research Group, Macroeconomics and Growth Team, 2009 ; Halle (Saale) : Universitäts- und Landesbibliothek Sachsen-Anhalt, 2009