RT Article T1 The Artifact Issue in Deterrence Research JF Criminology VO 28 IS 2 SP 347 OP 367 A1 Gibbs, Jack P. A2 Firebaugh, Glenn LA English YR 1990 UL https://krimdok.uni-tuebingen.de/Record/1912460769 DO 10.1111/j.1745-9125.1990.tb01329.x