1. ACEA, 2014, Overview of Purchase and Tax Incentives for Electric Vehicles in the EU (http://www.acea.be/publications/article/overview-of-incentives-for-buying-electric-vehicles).
2. Ahern, A., Weyman, G., Redelbach, M., Schulz. A., Akkermans, L., & Vannacci, L. (2012). OPTIMISM Deliverable 2.1: Gather and analyze national travel statistics. European Commission FP7 project: FP7-284892-OPTIMISM.
3. ENTD – Enquête nationale transports et déplacements (2008): National travel survey coordinated by Ministère de l’Écologie, du Développement Durable et de l’Énergie - Commissariat général au Développement durable.
4. European Commission, 2011, White Paper: Roadmap to a Single Transport Area – Towards a competitive and resource efficient transport system. COM(2011) 144 final.
5. Eurostat, 2012, Eurostat Regional Yearbook 2012.