1. Abi-Saab R (1991) Humanitarian Law and Internal Conflicts: The Evolution of Legal Concern. In: Delissen AJM, Tanja GT (eds) Humanitarian Law of Armed Conflict: Challenges Ahead – Essays in Honour of Frits Kalshoven. Martinus Nijhoff, Dordrecht, pp 209–223
2. Akande D (2012) Classification of Armed Conflicts: Relevant Legal Concepts. In: Wilmshurst E (ed) International Law and the Classification of Conflicts. Oxford University Press, Oxford, pp 32–79
3. Ambos K (2006) Internationales Strafrecht [International Criminal Law]. CH Beck, Munich
4. Aptel C (2012) Lubanga Decision Roundtable: The Participation of Children in Hostilities. Opinio Juris. http://opiniojuris.org/2012/03/18/lubanga-decision-roundtable-the-participation-of-children-in-hostilities/ . Accessed 4 June 2018
5. Ash RW (2007) Square Pegs and Round Holes: Al-Qaeda Detainees and Common Article 3. Indiana International & Comparative Law Review 17:269–306