RT Article T1 Social control, trade openness and human trafficking JF Journal of quantitative criminology VO 33 IS 4 SP 887 OP 913 A1 Jiang, Bo A2 LaFree, Gary 1951- LA English YR 2017 UL https://krimdok.uni-tuebingen.de/Record/1912705834 DO 10.1007/s10940-016-9316-7