1. Arzoz X (2018a) Autonomy and self-determination in Spain: a constitutional law perspective. In: Hilpold P (ed) Autonomy and self-determination – between legal assertions and utopian aspirations. Elgar
2. Bossacoma i Busquets P (2015) Justicia i legalitat de la secession – Una teoria de l’autodeterminació nacional des de Catalunya. Institut d’Estudis Autonòmics, Barcelona
3. Casanas Adam E (2017) The constitutional court of Spain: from system balancer to polarizing centralist. In: Aroney N, Kincaid J (eds) Courts in federal countries: federalists or unitarists? University of Toronto Press
4. Caspersen N (2017) The Catalan independence referendum: conflicting claims and international responses. In: Report of the international group of experts, The Catalan Independence Referendum: An Assessment of the Process of Self-Determination, IRAI
5. Cassese A (1995) Self-determination of the peoples: a legal reappraisal. Cambridge University Press, Cambridge