@article{Bongaarts2019,
author = {Bongaarts, J. and Hardee, K.},
title= {Trends in contraceptive prevalence in sub-Saharan Africa: The roles of family planning programs and education},
year = {2019},
doi = {10.2139/ssrn.3255823},
volume = {23},
number = {3},
pages = {96--105},
}