TY  - JOUR
T1  - Assessments of group influence, subjective political competence, and interest group membership
AU  - Koch, Jeffrey W.
PY  - 1993
DO  - 10.1007/BF00992100
SP  - 309
EP  - 325
JO  - Political Behavior
VL  - 15
IS  - 4
SN  - 0190-9320
ER  -