A Networked Model for Drug Trafficking in Mexico

"In this model, trackers minimize the costs of transporting drugs from producing municipalities in Mexico across the road network to U.S. points of entry. They incur costs from the physical distance traversed and from crackdowns and thus take the shortest route to the U.S. that avoids municipalities with crackdowns."

Really exciting stuff from a brilliant post-grad:

http://scholar.harvard.edu/files/dell/files/121113draft_0.pdf