European Commission; The Gallup Organisation: The European Emergency Number 112. Analytical Report. Survey conducted by The Gallup Organization Hungary upon the request of Directorate-General for Information Society and Media. Brussels: European Commission February 2009 http://ec.europa.eu/public_opinion/flash/fl_262_en.pdf
European Commission; The Gallup Organisation: The European Emergency Number 112. Summary. Survey conducted by The Gallup Organization Hungary upon the request of Directorate-General for Information Society and Media. Brussels: European Commission February 2009 http://ec.europa.eu/public_opinion/flash/fl_262_sum_en.pdf