• The International Division of Labour between Socialist and Capitalist States. Berlin 1961;
  • Foreign Trade Monopoly and Economic System of Socialism. Potsdam-Babelsberg 1968;
  • Manual of Foreign Trade Contracts (Editor), published simultaniously by Staatsverlag Berlin and by C.F. Müller, Heidelberg;
  • Volume 1: The Contract on International Sale of Goods. Berlin 1971, 1979, and 1986;
    Volume 2: Contracts on Industrial Works, Erection, Assembly, Services, Agency, Licensing, Leasing, and other types of contract. Berlin 1974, 1980, and 1987;
    Volume 3: Transport, Forwarding, Warehousing, Insurance, Control. Berlin 1977 and 1984;
    Volume 4: Co-operation, Compensation, Company, Consortium. Berlin 1982;
  • Commentary on the Code of International Commercial Contracts. Berlin 1978 and 1983, Co-Author;
  • Legal Regulation of Intersystemary Economic Relations. Berlin 1982, Co-Author;
  • Commentary on the UN Sales Convention and the UN Prescription Convention. Berlin 1985, Co-Author;
  • Commercial, Business and Trade Laws: German Democratic Republic, Dobbs Ferry, New York, 1983-87, Editor;
  • Outline of United States Trade Law, Berlin 1981, Editor;
  • International Sales Law, Commentary. Berlin 1991, Co-Author;
  • International Sales Law, Commentary, New York, London, Rome 1992, Co-Author.
  • Expropriated Heirs. How property once owned bs Jewish victims of Nazi persecution is being withheld from rightful heirs. Potsdam 2015 (German edition), Potsdam 2016 (English edition)