van den Brink, Martijn Ethics, Law and Politics, MPI for the Study of Religious and Ethnic Diversity, Max Planck Society;
https://onlinelibrary.wiley.com/doi/full/10.1111/jcms.12898 (Any fulltext)
van den Brink, M., & Kochenov, D. (2019). Against associate EU citizenship. Journal of common market studies, 57(6), 1366-1382. doi:10.1111/jcms.12898.