انظر: “An Analysis of the Preventive Effect of Environmental Liability: Environmental Liability, Location and Emissions Substitution: Evidence from the Toxic Release Inventory”, October 30,2001,at p.3وهي دراسة متاحة على شبكة الإنترنت على الموقع التالي: http://www.europa.eu.int/comm/environment/ liability/preventive.htm.
See “An Analysis of the Preventive Effect of Environmental Liability: Environmental Liability, Location and Emissions Substitution: Evidence from the Toxic Release Inventory”, 30 October 2001, at p. 3; available at www.europa.eu.int/comm/environment/ liability/preventive.htm.