RT Article T1 Does what police do at hot spots matter?: The Philadelphia Policing Tactics Experiment JF Criminology VO 53 IS 1 SP 23 OP 53 A2 Groff, Elizabeth Ruth LA English YR 2015 UL https://krimdok.uni-tuebingen.de/Record/1516312899 K1 Hot spots K1 Policing K1 Certainty K1 Offender focus DO 10.1111/1745-9125.12055