RT Article T1 Optimal targeting of incivility-reduction strategies JF Journal of quantitative criminology VO 20 IS 1 SP 63 OP 88 A1 Spelman, William LA English YR 2004 UL https://krimdok.uni-tuebingen.de/Record/1912642026 DO 10.1023/B:JOQC.0000016700.27654.76