The potential for low-carbon renewable methane as a transport fuel in France, Italy, and Spain

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Breathing Easy: A Survey of Zero Emission Buses Across America

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Biogas as a vehicle fuel in commuter buses – Life cycle cost and green house gas study

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In-Use Performance Comparison of Hybrid Electric, CNG, and Diesel Buses at New York City Transit

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Analysis of Electric Drive Technologies for Transit Applications: Battery-Electric, Hybrid-Electric, and Fuel Cells

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