Rinaldi, S. <https://pure.iiasa.ac.at/view/iiasa/253.html> & Della Rossa, F.  (2018).  Conflicts among N armed groups: Scenarios from a new descriptive model.   Nonlinear Dynamics 92 (1) 3-12. 10.1007/s11071-017-3446-9 <https://doi.org/10.1007/s11071-017-3446-9>.