@article{Bongaarts2015,
author = {Bongaarts, J. and Blanc, A.K.},
title= {Estimating the current mean age of mothers at the birth of their first child from household surveys},
year = {2015},
doi = {10.1186/s12963-015-0058-9},
volume = {13},
number = {25},
pages = {1--6},
}