1. Alegre, S. (2005). Mutual trust—Lifting the mask. In G. De Kerckhove & A. Weyembergh (Eds.), La confiance mutuelle dans l’espace pénal européen/Mutual trust in the European criminal area (pp. 40–45). Brussel: Editions de l’université de Bruxelles.
2. Amtenbrink, F. (2008). The multidimensional constitutional legal order of the European Union—A successful case of cosmopolitan constitution-building? In Netherlands yearbook of international law (Vol. XXXIX, pp. 3–68).
3. Battjes, H., Brouwer, E., Paulien, D. M., & Ouwerkerk, J. (2011). The principle of mutual trust in European asylum, migration, and criminal law. Reconciling trust and fundamental rights (p. 55). Utrecht: Meijers Committee.
4. Beck, U. (2006). The cosmopolitan vision. Cambridge: Polity Press.
5. Beck, U., & Grande, E. (2007). Cosmopolitan Europe. Cambridge: Polity Press.