Media type: E-Article Title: Crossvalidating data on party positioning on European integration Contributor: Marks, Gary; Hooghe, Liesbet; Steenbergen, Marco R.; Bakker, Ryan imprint: Elsevier BV, 2007 Published in: Electoral Studies Language: English DOI: 10.1016/j.electstud.2006.03.007 ISSN: 0261-3794 Keywords: Political Science and International Relations Origination: Footnote: