![]() | Up a level |
Jofre-Bonet, M. & Petry, N. M. (2008). Trading apples for oranges? Results of an experiment on the effects of Heroin and Cocaine price changes on addicts' polydrug use. Journal of Economic Behavior & Organization, 66(2), pp. 281-311. doi: 10.1016/j.jebo.2006.05.002