RT Article T1 Bullying as a special case of aggression - Procedures for cross-cultural assessment JF School psychology international VO 21 IS 1 SP 47 OP 64 A1 Kalliotis, P. LA Undetermined YR 2000 UL https://krimdok.uni-tuebingen.de/Record/1639612289 K1 Aggression K1 Schule