TY  - JOUR
T1  - Estimating Interval Scale Values for Survey Item Response Categories
AU  - Hensler, Carl
AU  - Stipak, Brian
PY  - 1979
SP  - 627
EP  - 649
JO  - American Journal of Political Science
VL  - 23
IS  - 3
SN  - 0092-5853
UR  - http://www.jstor.org/stable/2111033
ER  -