@article{ref1,
title="Introduction: Future Challenges of European Citizenship—Facing a Wide‐Open Pandora's Box",
journal="European law journal",
year="2007",
author="Besson, Samantha and Utzinger, André",
volume="13",
number="5",
pages="573-590",
abstract="<p>[Abstract unavailable]</p>",
language="",
issn="1351-5993",
doi="10.1111/j.1468-0386.2007.00384.x",
url="http://dx.doi.org/10.1111/j.1468-0386.2007.00384.x"
}