1. Adang, O. (2011). Initiation and escalation of collective violence: An observational study of protest and football events. In T. D. Madensen & J. Knutsson (Eds.), Preventing crowd violence (pp. 47–68). Lynne Rienner Publishers.
2. Adang, O., & Schreiber, M. (2024). How collective violence emerges and escalates. In B. Bürger, T. Herold, & R. Lee (Eds.), Public order policing. A professional’s guide to international theories, case studies, and best practices. Springer.
3. AIV Adviesraad Internationale Vraagstukken (2020). Europese Veiligheid: tijd voor nieuwe stappen, Advies nr. 112, Den Haag, 19 juni 2020.
4. BBC (2021). Covid: Dutch curfew riots rage for third night. 26.01.2021. retrieved February 1, 2023, from https://www.bbc.com/news/world-europe-55799919.
5. Bruggeman, W. (2001). Gendarmeries and the security challenges in the 21st century: Some introductory remarks. In J. L. Hovens & G. A. G. van Elk (Eds.), Gendarmeries and the security challenges of the 21st century. Koninklijke Marechaussee.