Soziale Kosten des Energieverbrauchs Externe Effekte des Elektrizitätsverbrauchs in der Bundesrepublik Deutschland Hohmeyer Olav Heftet / 1989 / Tysk
Certified Tropical Timber and Consumer Behaviour The Impact of a Certification Scheme for Tropical Timber from Sustainable Forest Management on German Demand Brockmann, Karl L. Heftet / 1996 / Engelsk
Internationale Regulierung der Gentechnik Praktische Erfahrungen in Japan, den USA und Europa Hohmeyer Olav Heftet / 1994 / Tysk
External Environmental Costs of Electric Power Analysis and Internalization Hohmeyer Olav Heftet / 2012 / Engelsk
Social Costs and Sustainability Valuation and Implementation in the Energy and Transport Sector Proceeding of an International Conference, Held at Ladenburg, Germany, May 27–30, 1995 Hohmeyer Olav Heftet / 2011 / Engelsk
Social Costs and Sustainable Mobility Strategies and Experiences in Europe and the United States Rennings Klaus Heftet / 1999 / Engelsk