@article{De Koker2009,
author = {De Koker, B.},
title= {Socio-demographic determinants of informal caregiving: Co-resident versus extra-resident care},
year = {2009},
doi = {10.1007/s10433-008-0103-7},
journal = {European Journal of Ageing},
volume = {6},
number = {1},
pages = {3--15},
}