RT Article T1 Collective violence and group solidarity: evidence from a fending society JF American sociological review VO 64 IS 3 SP 356 OP 380 A1 Gould, Roger V. LA English YR 1999 UL https://krimdok.uni-tuebingen.de/Record/1639511857 K1 Dynamik K1 Gruppengewalt K1 Konflikt K1 Gruppenverhalten