Publications
"Estimated Emission Reductions from California’s Enhanced Smog Check Program." Environmental Science and Technology 37.11 (2003) 2588-2595. LBNL-52109.
. . "Short-term emissions deterioration in the California and Phoenix I/M programs." Transportation Research Part D: Transport and Environment 9.2 (2004) 107-124. LBNL-52169.
. "Some Issues in the Statistical Analysis of Vehicle Emissions." Journal of Transportation and Statistics 3.2 (2000) 1-14. LBNL-46115.
.