@article{Beise2002,
author = {Beise, J. and Voland, E.},
title= {A multilevel event history analysis of the effects of grandmothers on child mortality in a historical German population},
year = {2002},
doi = {10.4054/DemRes.2002.7.13},
journal = {Demographic Research},
volume = {7},
number = {13},
pages = {469--498},
}