RT Article T1 The effects of directed patrol and self-initiated enforcement on firearm violence: a randomized controlled study of hot spot policing JF Criminology VO 52 IS 3 SP 428 OP 449 A1 Rosenfeld, Richard 1948-2024 A2 Deckard, Mica A2 Blackburn, Emily LA English YR 2014 UL https://krimdok.uni-tuebingen.de/Record/1641039302 K1 Polizeitaktik K1 Hot Spots K1 Streifendienst K1 Wirksamkeit