1. Zero Emission Bay Area (ZEBA) Fuel Cell Bus Demonstration: Second Results Report;Eudy,2012
2. Hydrogen Fuel Cell Bus Technology State of the Art Review;Zaetta,2011
3. International Fuel Cell Bus Collaborative, http://gofuelcellbus.com/index.php/the-collaborative/all-active-demonstrations.
4. Fuel Cell Buses in U.S. Transit Fleets: Current Status 2013;Eudy,2013
5. Fuel cell buses in perspective: international program and the global transit bus market;Jerram,2011