Urdal, Henrik; Helge Brunborg & Ewa Tabeau (2006) Introduction, in The Demography of Armed Conflict. Berlin: (1–16).
Tabeau, Ewa; Henrik Urdal; & Helge Brunborg, eds, (2006) The Demography of Armed Conflict. Berlin: Springer. International Studies in Population .
The Peace Research Institute Oslo (PRIO) conducts research on the conditions for peaceful relations between states, groups and people.