Timmermans, Jean-Marc, Julien Matheys, Joeri van Mierlo, and Philippe Lataire. 2006. “Environmental Rating of Vehicles With Different Fuels and Drive Trains: A Univocal and Applicable Methodology”. European Journal of Transport and Infrastructure Research 6 (4). https://doi.org/10.18757/ejtir.2006.6.4.3455.