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European Commission: Flash Eurobarometer 382a: Europeans’ satisfaction with rail services. Conducted by TNS Political & Social at the request of The European Commission, Directorate-General Mobility and Transport. Survey co-ordinated by the European Commission, Directorate-General for Communication. (DG COMM “Strategy, Corporate Communication Actions and Eurobarometer” Unit). Brussels, December 2013. http://ec.europa.eu/public_opinion/flash/fl_382a_en.pdf
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European Commission: Flash Eurobarometer 382b: Europeans’ satisfaction with urban transport. Conducted by TNS Political & Social at the request of The European Commission, Directorate-General Mobility and Transport. Survey co-ordinated by the European Commission, Directorate-General for Communication. (DG COMM “Strategy, Corporate Communication Actions and Eurobarometer” Unit). Brussels, June 2014. http://ec.europa.eu/public_opinion/flash/fl_382b_en.pdf
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