TY  - JOUR
A1  - Elbers, C.
A1  - Ridder, G.
T1  - True and spurious Duration Dependence: The Identifiability of Proportitional Hazard Model
Y1  - 1982
DO  - 10.2307/2297364
JF  - Review of Economic Studies
VL  - 49
IS  - 3
SP  - 403
EP  - -409

ER  -