@article{Alter2007,
author = {Alter, G. and Dribe, M. and Van Poppel, F.},
title= {Widowhood, family size, and postreproductive mortality: A comparative analysis of three populations in nineteenth-century Europe},
year = {2007},
doi = {10.1353/dem.2007.0037},
volume = {44},
number = {4},
pages = {785--806},
}