1. ARB (Air Resources Board), 1996. Methodologies for estimating emissions from on-road motor vehicles (6 volumes). Technical Support Division, Mobile Sources Emission Inventory Branch, CA, EPA
2. Air pollution in road tunnels;Barrefors;Science of the Total Environment,1996
3. Modeling air pollution in road tunnels;Bellasio;Atmospheric Environment,1997
4. CO concentration inside the Cross Harbor tunnel in Hong Kong;Chan;Environment International,1996
5. Tunnel air quality and vehicle emissions;Chang;Atmospheric Environment,1981