@article{Barber2001,
author = {Barber, J.S.},
title= {The Intergenerational Transmission of Age at First Birth among Married and Unmarried Men and Women},
year = {2001},
doi = {10.1006/ssre.2000.0697},
journal = {Social Science Research},
volume = {30},
number = {2},
pages = {219--247},
}