"International economic integration." . . . "The Eastern enlargement of the European Union efforts and obstacles on the way to membership"@en . "The Eastern enlargement of the European Union : efforts and obstacles on the way to membership" . . "Aufsatzsammlung" . . . . . . . . . . . . . . . "The Eastern Enlargement of the European Union : efforts and obstacles on the way to membership" . . . . . . "Osteuropa." . . . . "Europäische Union." . . "Erweiterung." . . "European Union" . . "European Union." . "Europe" . . "Europe." . "Europe, Eastern." . . "Geschichte 1991-2004" . . "Geschichte 1991-2004." .