In 1990 , the year the GDR was dissolved in favor of German reunification , he retired . Taking advantage of his knowledge of the Russian language and former Soviet archives being opened at the time , he published about the expulsion of Germans , the role of Stalin in creation of the Oder-Neisse line , the anti-German propaganda of Ilja Ehrenburg , and mainly the Nemmersdorf massacre
Nemmersdorf massacre
Nemmersdorf massacre
Bernhard Fisch