Philippe,, Bourrinet,. «Introduction». The Dutch and German communist left (1900-68) : 'Neither Lenin nor Trotsky nor Stalin!' 'All workers must think for themselves!'. Leiden. s. 2. ISBN9789004325937. OCLC964065705. «By 1927, what remained of the German-Dutch current had little in common with the KAPD and Gorter, who had previously embodied Western Links-kommunismus. With the progressive decline of the Berlin KAPD and Gorter’s Dutch KAPN, it consisted of council-communist groups, both in Germany and in the Netherlands, more and more influenced by the anti-authoritarian theories of Otto Rühle or by the syndicalist conceptions inside the Unionist movement.»