@article{Collier2004,
author = {Collier, P. and Hoeffler, A.},
title= {Greed and grievance in civil war},
year = {2004},
doi = {10.1093/oep/gpf064},
URL = {https://doi.org/10.1093/oep/gpf064},
volume = {56},
number = {4},
pages = {563--595},
}