@article{Rackin2018,
author = {Rackin, H. and Morgan, S.P.},
title= {Prospective versus retrospective measurement of unwanted fertility: Strengths, weaknesses, and inconsistencies assessed for a cohort of US women},
year = {2018},
doi = {10.4054/DemRes.2018.39.3},
volume = {39},
number = {3},
pages = {61--94},
}