FOSTER, D. M. Engene, Jan Oskar. Terrorism in Western Europe: Explaining the Trends Since 1950. Journal of Conflict Studies, [S. l.], v. 25, n. 1, 2005. Disponível em: https://journals.lib.unb.ca/index.php/JCS/article/view/196. Acesso em: 4 jul. 2020.