RT Article T1 Universal jurisdiction as Janus-faced: the dual nature of the German international criminal code JF Journal of international criminal justice VO 11 IS 4 SP 737 OP 762 A1 Langer, Máximo LA English YR 2013 UL https://krimdok.uni-tuebingen.de/Record/1526133288 DO 10.1093/jicj/mqt057