TY  - JOUR
A1  - Ermisch, J.F.
T1  - Purchased child care, optimal family size and mother's employment: Theory and econometric analysis
Y1  - 1989
DO  - 10.1007/BF00522403
JF  - Journal of Population Economics
VL  - 2
IS  - 2
SP  - 79
EP  - -102

ER  -