@article{Hakkert2011,
author = {Hakkert, R. },
title= {Follow-up surveys for census estimates of maternal mortality: Experiences from Bolivia and Mozambique},
year = {2011},
doi = {10.1007/s12546-011-9063-4},
journal = {Journal of Population Research },
volume = {28},
number = {1},
pages = {15--30},
}