@article{Bongaarts2012,
author = {Bongaarts, J.  and Casterline, J.B. },
title= {Fertility transition: Is sub-Saharan Africa different?},
year = {2012},
doi = {10.1111/j.1728-4457.2013.00557.x},
journal = {Population and Development Review },
volume = {38},
number = {Supplement 1},
pages = {153--168},
}