Gates, Scott; Nils Petter Gleditsch; Håvard Hegre & Ranveig Gissinger (1998) Timing the Changes in Political Structures. A New Polity Database, Journal of Conflict Resolution 42(2): 231–242.
Research Professor. Editor, International Area Studies Review
Research Professor; Professor Emeritus of Political Science, NTNU
The Peace Research Institute Oslo (PRIO) conducts research on the conditions for peaceful relations between states, groups and people.