1. Reducing traffic congestion and its impact on transport energy use in Singapore;Ang;Energy Policy,1990
2. Economische gevolgen op Lange Termijn van Heffingen op Energie;Centraal Planbureau (CPB);CPB Working Paper No. 43,1992
3. A spatial cost-effectiveness study of transport policy measures aimed at achieving air quality standards in the European Union;Degraeve,1996
4. EUCARS: A Partial Equilibrium European CAR Emissions Simulation Model;Denis,1997
5. Strategies to reduce carbon dioxide emissions from road traffic;Eriksson,1995