RT Article T1 Reexamining criminal behavior: The importance of omitted variable bias JF The review of economics and statistics VO 85 IS 1 SP 205 OP 211 A1 Mustard, David B. LA English YR 2003 UL https://krimdok.uni-tuebingen.de/Record/191268053X DO 10.1162/rest.2003.85.1.205