@book{Collier2003,
author = {Collier, P. and Hoeffler, A. and Elliot, H. and Hegre, H. and Reynal-Querol, M. and Sambanis, N.},
title= {Breaking the conflict trap: Civil war and development policy},
year = {2003},
address = {Oxford and Washington, D.C.},
publisher = {Oxford University Press and World Bank},
}