RT Article T1 Does private security affect crime?: A test using state regulations as instruments JF Applied economics VO 49 IS 48 SP 4911 OP 4924 A1 Meehan, Brian A2 Benson, Bruce L. 1949- LA English YR 2017 UL https://krimdok.uni-tuebingen.de/Record/1912519100 DO 10.1080/00036846.2017.1296551