@article{Costa1999,
author = {Costa, D.},
title= {A house of her own: Old age assistance and the living arrangements of older nonmarried women},
year = {1999},
doi = {10.1016/S0047-2727(98)00094-2},
journal = {Journal of Public Economics},
volume = {72},
number = {1},
pages = {39--59},
}