@article{Bumpass1978,
author = {Bumpass, L.L. and Rindfuss, R.R. and Janosik, R.B.},
title= {Age and marital status at first birth and the pace of subsequent fertility},
year = {1978},
doi = {10.2307/2060491},
volume = {15},
number = {1},
pages = {75--86},
}