1. Abs, Hermann J., ‘The Safety of Capital’ in James Daniel (ed.), Private Investment: The Key to International Industrial Development: A Report of the San Francisco Conference, October 14–18, 1957 (McGraw Hill 1958) 69–77.
2. Die Konjunktur bleibt ruhig;Vortragsreihe des Deutschen Industrieinstituts,1959
3. The Proposed Convention to Protect Private Foreign Investment: Introduction;Journal of Public Law,1960