TY  - JOUR
A1  - Henz, U.
A1  - Huinink, J.
T1  - Problems concerning the parametric analysis of the age at first birth
Y1  - 1999
DO  - 10.1080/08898489909525451
JF  - Mathematical Population Studies
VL  - 7
IS  - 2
SP  - 131
EP  - -145

ER  -