TY  - JOUR
A1  - Abbring, J. H.
A1  - van den Berg, G. J.
T1  - The Unobserved Heterogeneity Distribution in Duration Analysis
Y1  - 2007
DO  - 10.1093/biomet/asm013
JF  - Biometrika
VL  - 94
IS  - 1
SP  - 87
EP  - -99

ER  -