1. Akita, Masanobu, 2014. Real-time fuel consumption measurement using raw exhaust flow meter and zirconia AFR sensor. Featur. Artic. Appl. 42, 91–96. https://static.horiba.com/fileadmin/Horiba/Company/About_HORIBA/Readout/R42E/R42E_14_091_01.pdf.
2. The impact of congestion charging on vehicle speed and its implications for assessing vehicle emissions;Beevers;Atmos. Environ.,2005
3. Bernstein, Lenny, Peter Bosch, Osvaldo Canziani, Zhenlin Chen, Renate Christ, Ogunlade Davidson, William Hare, Saleemul Huq, David J Karoly, Vladimir Kattsov, 2008. Climate Change 2007 Synthesis Report: IPCC.
4. Carolien, Beckx, LI Panis, Torfs Rudi, Janssens Davy, Broekx Steven, 2007. The application of the simulation software vetess to evaluate the environmental impact of traffic measures. In: 10th Conference on Computers on Urban Planning and Urban Management.
5. The Energy Conservation Center, 2005. Final Report by Heavy Vehicle Fuel Efficiency Standard Evaluation Group, Heavy Vehicle Standards Evaluation Subcommittee, Energy Efficiency Standards Subcommittee of the Advisory Committee for Natural Resources and Energy. https://www.eccj.or.jp/top_runner/pdf/heavy_vehicles_nov2005.pdf.