Gleditsch, Kristian Skrede & Andrea Ruggeri (2010) Political Opportunity Structures, Democracy, and Civil War, Journal of Peace Research 47(3): 299–310.
Ruggeri, Andrea; & Gleditsch, Kristian Skrede 2007 Political Opportunity Structures, Democracy, and Civil War, 28 February–3 March.
Gleditsch, Kristian Skrede; Han Dorussen; Nils Metternich & Andrea Ruggeri (2010) Transnational Dimensions and the Myth of Civil Wars as National Events, PRIO Policy Brief, 1. Oslo: PRIO.
The Peace Research Institute Oslo (PRIO) conducts research on the conditions for peaceful relations between states, groups and people.