Marxer, Wilfried; Pállinger, Zoltán Tibor (2007): System contexts and system effects of direct democracy - direct democracy in Liechtenstein and Switzerland compared. In: Zoltán Tibor Pállinger, Bruno Kaufmann, Wilfried Marxer and Theo Schiller (Hg.): Direct Democracy in Europe. Wiesbaden: VS Verlag für Sozialwissenschaften, S. 12-29.