Enterline, Andrew J.; & Crescenzi, Mark J. (1999) Ripples from the Waves? A Systematic, Time-series Analysis of Democracy, Democratization, and Interstate War , Journal of Peace Research 36(1): 75–94.
Diehl, Paul F.; & Crescenzi, Mark J. (1998) Reconfiguring the Arms Race-War Debate , Journal of Peace Research 35(1): 111–118.
The Peace Research Institute Oslo (PRIO) conducts research on the conditions for peaceful relations between states, groups and people.