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  -