TY  - JOUR
A1  - Frejka, T.
A1  - Sardon, J. P.
T1  - First birth trends in developed countries: Persisting parenthood postponement
Y1  - 2006
DO  - 10.4054/DemRes.2006.15.6 
JF  - Demographic Research
VL  - 15
IS  - 6
SP  - 147
EP  - -180

ER  -