Sambanis, Nicholas; Marta Reynal-Querol; Lani Elliott; Anke Hoeffler; Paul Collier & Håvard Hegre (2003) Breaking the Conflict Trap: Civil War and Development Policy. New YorkNew Policy Research Report.
Collier, Paul; Lani Elliott; Håvard Hegre; Anke Hoeffler; Marta Reynal-Querol; & Nicholas Sambanis (2003) Breaking the Conflict Trap: Civil War and Development Policy, World Bank Policy Research Report, 56793. Washington, DC: World Bank.
The Peace Research Institute Oslo (PRIO) conducts research on the conditions for peaceful relations between states, groups and people.