RT Article T1 Measuring special deterrence effects on drug offenders JF Studies on crime and crime prevention SP 239 OP 257 A1 Odegard, Einar A1 Amundsen, Arvid LA English YR 1998 UL https://krimdok.uni-tuebingen.de/Record/1639817212 K1 Drogenkriminalität K1 Abschreckung