RT Book T1 An integrative review of historical technology and countermeasure usage trends in online child sexual exploitation material offenders A1 Newman, Emily A2 Steel, Chad A2 Quayle, Ethel A2 O'Rourke, Suzanne LA English YR 2020 UL https://krimdok.uni-tuebingen.de/Record/1866598988 DO 10.1016/j.fsidi.2020.300971