The potential for low-carbon renewable methane as a transport fuel in France, Italy, and Spain Chelsea Baldino, Nikita Pavlenko, and Stephanie Searle, and Adam ChristensenICCTNovember 1, 2018
Biogas as a vehicle fuel in commuter buses – Life cycle cost and green house gas study Tuula KajolinnaBaltic Biogas BusAugust 9, 2012
The Transit Bus Niche Market For Alternative Fuels: Module 3: Overview of Compressed Natural Gas as a Transit Bus Fuel TIAX LLC, Irvine OfficeUS Department of Energy Alternative Fuels Data CenterDecember 1, 2003