Brandon M. Graver Graver, B. M., Frey, H. C., & Hu, J. (2016). Effect of Biodiesel Fuels on Real-World Emissions of Passenger Locomotives. ENVIRONMENTAL SCIENCE & TECHNOLOGY, 50(21), 12030–12039. https://doi.org/10.1021/acs.est.6b03567 Graver, B. M., & Frey, H. C. (2015). Comparison of Over-the-Rail and Rail Yard Measurements of Diesel Locomotives. ENVIRONMENTAL SCIENCE & TECHNOLOGY, 49(21), 13031–13039. https://doi.org/10.1021/acs.est.5b02497 Hu, J., Frey, H. C., Sandhu, G. S., Graver, B. M., Bishop, G. A., Schuchmann, B. G., & Ray, J. D. (2014). Method for Modeling Driving Cycles, Fuel Use, and Emissions for Over Snow Vehicles. ENVIRONMENTAL SCIENCE & TECHNOLOGY, 48(14), 8258–8265. https://doi.org/10.1021/es501164j Graver, B. M., & Frey, H. C. (2013). Comparison of Locomotive Emissions Measured During Dynamometer Versus Rail Yard Engine Load Tests. TRANSPORTATION RESEARCH RECORD, (2341), 23–33. https://doi.org/10.3141/2341-03 Graver, B. M., Frey, H. C., & Choi, H.-W. (2011). In-Use Measurement of Activity, Energy Use, and Emissions of a Plug-in Hybrid Electric Vehicle. ENVIRONMENTAL SCIENCE & TECHNOLOGY, 45(20), 9044–9051. https://doi.org/10.1021/es201165d