1. Ashbaugh, L.L., Lawson, D.R., Bishop, G.A., Guenther, P.L., Stedman, D.H., Stephens, R.D., Groblicki, P.J., Parikh, J.S., Johnson, B.J., Haung, S.C., 1992. On-road Remote Sensing of Carbon Monoxide and Hydrocarbon Emissions during Several Vehicle Operating Conditions. Presented at Environmental Source Controls, Phoenix, AZ.
2. Bishop, G.A., Stedman, D.H., Hutton, R.B., Bohren, L., Lacey, N., 2000. Drive-by motor vehicle emissions: immediate feedback in reducing air pollution. Environmental Science and Technology, 34(6):1110–1116. [doi:10.1021/es9908725]
3. Bishop, G.A., Williams, M.J., Burgard, D.A., Stedman, D.H., 2003. On-road Remote Sensing of Automobile Emissions in the Chicago Area: Year 5, September 2002. Final Report to the Coordinating Research Council, Inc., USA.
4. Report prepared for the Coordinating Research Council under Contract;D.A. Burgard,2003
5. Chan, T.L., Ning, Z., Leung, C.W., Cheung, C.S., Hung, W.T., Dong, G., 2004. On-road remote sensing of petrol vehicle emissions measurement and emission factors estimation in Hong Kong. Atmospheric Environment, 38(14):2055–2066. [doi:10.1016/j.atmosenv.2004.01.031]