TY  - JOUR
A1  - Heckman, J.J.
A1  - Singer, B.
T1  - Econometric duration analysis
Y1  - 1984
DO  - 10.1016/0304-4076(84)90075-7
JF  - Journal of Econometrics
VL  - 24
IS  - 1–2
SP  - 63
EP  - -132

ER  -