RT Article T1 Examining the joint impact of moderating and nonlinear peer effects on the sex gap in violent crime JF Criminal justice and behavior VO 42 IS 2 SP 176 OP 195 A1 Vásquez, Bob Edward A2 Farrell, Amy S. A2 Zimmerman, Gregory M. LA English YR 2015 UL https://krimdok.uni-tuebingen.de/Record/1912546833 DO 10.1177/0093854814544318