1. European Commission. (2006). Keep Europe moving - Sustainable mobility for our continent Mid-term review of the European Commission’s 2001 transport white paper. Brussels, Belgium: Author. Retrieved from http://eur-lex.europa.eu/LexUriServ/LexUriServ.do?uri=com:2006:0314:fin:en:pdf
2. European Commission. (2007). Freight transport logistics action plan. Brussels, Belgium: Author. Retrieved from http://ec.europa.eu/transport/logistics/freight_logistics_action_plan/doc/action_plan/2007_com_logistics_action_plan_en.pdf
3. European Commission. (2011). Roadmap to a single European transport area. Retrieved from http://eur-lex.europa.eu/LexUriServ/LexUriServ.do?uri=com:2011:0144:fin:en:pdf
4. Freightwise. (2009). Deliverable D17.2 (second release). Retrieved from http://www.freightwise.info