2008, Part of book or chapter of book (Böcker, A.; Havinga, T.; Minderhoud, P. (ed.), Migratierecht en rechtssociologie, gebundeld in Kees' studies. Migration Law and Sociology of Law, Collected Essays in honour of Kees Groenendijk, pp. 311-320)
2007, Part of book or chapter of book (Baldaccini, A.; Guild, E.; Toner, H. (ed.), Whose freedom, security and justice? EU immigration and asylum law and policy, pp. 57-83)