"Charging Choices and Fuel Displacement in a Large-Scale Demonstration of Plug-In Hybrid Electric Vehicles."

Zoepf, S., D. MacKenzie, David R. Keith and W. Chernicoff. Transportation Research Record Vol. 2385, (2013): 1-10.

"Essays on the Dynamics of Alternative Fuel Vehicle Adoption: Insights from the Market for Hybrid-Electric Vehicles in the United States."

Keith, David R. Engineering Systems Division, Massachusetts Institute of Technology, 2012.