Shih-Hao Pang Rasdorf, W., Frey, C., Lewis, P., Kim, K., Pang, S.-H., & Abolhassani, S. (2010). Field procedures for real-world measurements of emissions from diesel construction vehicles. Journal of Infrastructure Systems, 16(3), 216–225. https://doi.org/10.1061/(asce)is.1943-555x.0000027 Pang, S. H., Frey, H. C., & Rasdorf, W. J. (2009). Life cycle inventory energy consumption and emissions for biodiesel versus petroleum diesel fueled construction vehicles. Environmental Science & Technology, 43(16), 6398–6405. https://doi.org/10.1021/os802916u Lewis, P., Rasdorf, W., Frey, H. C., Pang, S.-H., & Kim, K. (2009). Requirements and incentives for reducing construction vehicle emissions and comparison of nonroad diesel engine emissions data sources. Journal of Construction Engineering and Management, 135(5), 341–351. https://doi.org/10.1061/(ASCE)CO.1943-7862.0000008 Frey, H. C., Kim, K., Pang, S.-H., Rasdorf, W. J., & Lewis, P. (2008). Characterization of real-world activity, fuel use, and emissions for selected motor graders fueled with petroleum diesel and B20 biodiesel. Journal of the Air and Waste Management Association, 58(10), 1274–1287. https://doi.org/10.3155/1047-3289.58.10.1274