1. Green Paper: Towards a New Culture for Urban Mobilityhttp://eur-lex.europa.eu/legal-content/EN/TXT/PDF/?uri=CELEX:52007DC0551&from=EN
2. Sustainability and Cities: Overcoming Automobile Dependence;Newman,1999
3. Green Growth in Cities,2013
4. Climate Neutral Cities. How to Make Cities less Energy and Carbon Intensive and more Resilient to Climatic Challengeshttp://www.unece.org/fileadmin/DAM/hlm/documents/Publications/climate.neutral.cities_e.pdf
5. Policy Instruments for Achieving Environmentally Sustainable Transport,2002