1. http://www.pgr.gob.mx/Temas%20Relevantes/Documentos\/Informes%20Institucionales/2012/1.4%20Crimen%20Organizado.pdf
2. http://www.diegovalle.net/narcomap
3. Espinal-Enríquez J, Siqueiros-García JM, García-Herrera R and Alcalá-Corona S (2015) A Literature-Based Approach to a Narco-Network. In: L.M. Aiello and D. McFarland (Eds.) SocInfo 2014 Workshops. LNCS. 8852. pp. 97–101. DOI: 10.1007/978-3-319-15168-713
4. Homicide as Infectious Disease: Using Public Health Methods to Investigate the Diffusion of Homicide;AM Zeoli;Justice Quarterly,2014
5. The Diffusion of Collective Violence;BL Pitcher;Am Soc Rev,1978