Clauset, Aaron; Lindsay Heger; Maxwell Young & Kristian Skrede Gleditsch (2010) The Strategic Calculus of Terrorism: Substitution and Competition in the Israel-Palestine Conflict, Cooperation and Conflict 45(1): 6–33.
Young, Maxwell & Kristian Skrede Gleditsch (2007) On the Frequency of Severe Terrorist Events, in Statsvitenskaplig Fagkonferanse. Trondheim: .
Gleditsch, Kristian Skrede; Maxwell Young & Aaron Clauset (2007) On the Frequency of Severe Terrorist Events, in Journal of Conflict Resolution. Cambridge: (58–87).
The Peace Research Institute Oslo (PRIO) conducts research on the conditions for peaceful relations between states, groups and people.