RT Article T1 Delinquent peer influence on offending versatility: Can peers promote specialized delinquency? JF Criminology VO 53 IS 2 SP 280 OP 308 A1 Thomas, Kyle J. LA English YR 2015 UL https://krimdok.uni-tuebingen.de/Record/1912508001 DO 10.1111/1745-9125.12069