@inbook{564f7b7b946c473282cd6ae60bfecf4c,
title = "National Citizenship and EU Citizenship: What Actual Competence is Left for the Member States in the Field of Citizenship? ",
author = "Helle Krunke and Felix Schulyok",
year = "2014",
language = "English",
isbn = "978-3-8487-0995-3",
pages = "107--152",
editor = "Thomas Giegerich and Gstrein, \{Oskar Josef\} and Sebastian Zeitzmann",
booktitle = "The EU Between {"}an Ever Closer Union{"} and Inalienable Policy Domains of Member States",
publisher = "Nomos Verlagsgesellschaft",
}