TY  - CHAP
A1  - Chamberlain, G.
T1  - Heterogeneity, Omitted Variable Bias, and Duration Dependence
Y1  - 1985
DO  - 10.1017/CCOL0521304539.001
A3  - Heckman, J.J.
A3  - Singer, B.S.
T2  - Longitudinal Analysis of Labor Market Data
CY  - Cambridge
PB  - Cambridge University Press
SP  - 3
EP  - -38

ER  -