TY  - JOUR
T1  - Is group membership a prerequisite for group identification?
AU  - Koch, Jeffrey W.
PY  - 1993
DO  - 10.1007/BF00993416
SP  - 49
EP  - 60
JO  - Political Behavior
VL  - 15
IS  - 1
SN  - 0190-9320
ER  -