Pan-European referendum 'impossible,' expert says

"Recently I sat at a table with 20 top constitutional lawyers from different countries asking if a pan-European referendum was possible and the answer was 'no way,' because of all the different constitutional arrangements. It's more complicated than any other solution," Stefano Bartolini from the European University Institute in Florence said at a conference organised by the EU parliament ahead of the 2009 elections.

Asked if this was the case with a non-binding referendum as well, he r...