Lyngstad, Torkild Hovde; Helge Brunborg & Henrik Urdal (2003) Accounting for Genocide: How Many Were Killed in Srebrenica?, European Journal of Population 19(3): 229–248.
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 .
Brunborg, Helge & Henrik Urdal (2005) The Demography of Conflict and Violence: An Introduction, Journal of Peace Research 42(4): 371–374.
The Peace Research Institute Oslo (PRIO) conducts research on the conditions for peaceful relations between states, groups and people.