RT Article T1 Illicit drug use among arrestees, prices and policy JF Journal of urban economics VO 63 IS 2 SP 694 OP 714 A1 Dave, Dhaval LA English YR 2009 UL https://krimdok.uni-tuebingen.de/Record/1912580454 DO 10.1016/j.jue.2007.04.011