Global Market Opportunities, Barriers, Technology Issues, and Demand Forecasts for E-Bicycles, Pedal-Assist Bicycles, and E-Bicycle Batteries Pike Research, 2012
Fuel Cell Buses in U.S. Transit Fleets: Current Status 2011 National Renewable Energy Laboratory, November 2011
Recapturing Global Leadership in Bus Rapid Transit Institute for Transportation & Development Policy, 2011