RT Book T1 Transformative approaches to violent extremism T2 Berghof handbook dialogue series JF Berghof Handbook Dialogue Series A2 Austin, Beatrix 1969- LA English PP Berlin, Germany PB Berghof Foundation YR 2018 UL https://krimdok.uni-tuebingen.de/Record/1575915839 SN 9783941514355 SN 3941514350