TY  - JOUR
A1  - Cameron, A.C.
A1  - Windmeijer, F.A.G.
T1  - R-Squared measures for count data regression models with applications to health-care utilization
Y1  - 1996
DO  - 10.2307/1392433
JF  - Journal of Business & Economic Statistics
VL  - 14
IS  - 2
SP  - 209
EP  - -220

ER  -