«Discrimination in the EU in 2012»(PDF), European Union: European Commission, Special Eurobarometer, 383: 233, 2012, consultado em 14 de agosto de 2013 The question asked was "Do you consider yourself to be...?" With a card showing: Catholic, Orthodox, Protestant, Other Christian, Jewish, Muslim, Sikh, Buddhist, Hindu, Atheist, and Non-believer/Agnostic. Space was given for Other (SPONTANEOUS) and DK. Jewish, Sikh, Buddhist, Hindu did not reach the 1% threshold.
Footnote: The Celtic and Germanic influences on and origins of the Belgae remains disputed. Further reading, e.g.
«Ethnic and Cultural Identity». Barbarians on the Greek Periphery?—Origins of Celtic Art
