1. Alarid, M.: Recruitment and radicalization: the role of social media and new technology. In: Impunity: Countering Illicit Power in War and Transition, pp. 313–330. National Defense University, Washington, DC (2016)
2. Arango, T., Gordon, M.: Iraqi insurgents secure control of border posts. The New York Times. https://www.nytimes.com/2014/06/24/world/middleeast/sunni-militants-seize-crossing-on-iraq-jordan-border.html (2014)
3. Archetti, C.: Terrorism, communication and new media: explaining radicalization in the digital age. Perspect. Terror. 9(1) (2015)
4. Archivio ’900: I comunicati delle Brigate Rosse durante il sequestro Moro. archivio900.it (2003)
5. Boyd-Barrett, O., Newbold, C.: Approaches to media: a reader. St Martin’s Press, New York (1995)