University College London, University of Surrey - Department of Political, International and Policy Studies, Migration Policy Institute, University College London, University of Surrey - School of Management, University of Wales, Aberystwyth, University of Newcastle upon Tyne, affiliation not provided to SSRN, University of Edinburgh, European University Institute, Concordia International University, Waterford Institute of Technology, European Commission, University of Oxford, Liverpool John Moores University, University of Warwick and Universiteit Antwerpen

European University Institute, University of Bristol, Waterford Institute of Technology, University of Lincoln (UK) - Department of Policy Studies, University of the West of England, University College Dublin (UCD) - Sutherland School of Law, Università degli Studi di Trento, Universiteit Antwerpen and University of Kent