RT Article T1 Police, crime and the problem of weak instruments: Revisiting JF Journal of quantitative criminology VO 32 IS 1 SP 133 OP 158 A1 Kovandzic, Tomislav A2 Piquero, Alex R. 1970- A2 Orrick, Erin A2 Vieraitis, Lynne M. A2 Schaffer, Mark E. LA English YR 2016 UL https://krimdok.uni-tuebingen.de/Record/1912652021 DO 10.1007/s10940-015-9257-6