Washington, DC : Foundation for Political, Economic and Social Research, 2010 ; Halle (Saale) : Universitäts- und Landesbibliothek Sachsen-Anhalt, 2010
Washington, DC : Foundation for Political, Economic and Social Research, 2008 ; Halle (Saale) : Universitäts- und Landesbibliothek Sachsen-Anhalt, 2008