1See: Heinrich Bortfeldt, “The German Communists in Disarray” ,in Journal of Communist Studies, Vol. 7, 1991, pp.520 - 535.http ://www. politicalresources, net.
2David Patton, “The Rise of Germany' s Party of Democratic Socialism: 'Regionalized Pluralism' in the Federal Republic?” in West European Politics, Vol. 23, nr. 1,2000, pp. 144- 160.