RT Article T1 Traditional bullying and cyberbullying: identification of risk groups for adjustment problems JF Zeitschrift für Psychologie VO 217 IS 4 SP 205 OP 213 A1 Gradinger, Petra A2 Strohmeier, Dagmar A2 Spielmann, Christiane LA English YR 2009 UL https://krimdok.uni-tuebingen.de/Record/1391716477 K1 Bullying K1 Cyberbullying K1 Viktimisierung K1 Anpassung K1 Aggression DO 10.1027/0044-3409.217.4.205