Wucherpfenning, Julian;Metternich, Nils;Gleditsch, Kristian Skrede; & Cederman, Lars-Erik (2012)Ethnicity, the State, and the Duration of Civil Wars , World Politics 64(1): 79–115.
Metternich, Nils & Kristian Skrede Gleditsch (2016) Forecasting in International Relations, in Patrick James, ed., Oxford Bibliographies in International Relations. New York: Oxford University Press .
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.