1. Philadelphia: Neighborhoods, division, and conflict in a postindustrial city;Adams,1991
2. How the drug field turned my beard grey;Agar;International Journal of Drug Policy,2002
3. Using trend theory to explain heroin use trends;Agar;Journal of Psychoactive Drugs,2001
4. Technical report for the price and purity of illicit drugs through 2003;Arkes,2004
5. Why the DEASTRIDE data are still useful for understanding drug markets;Arkes,2008