@article{Keilman2010,
author = {Keilman, N. and Christiansen, S.},
title= {Norwegian elderly less likely to live alone in the future},
year = {2010},
doi = {10.1007/s10680-009-9195-9},
journal = {European Journal of Population},
volume = {26},
number = {1},
pages = {47--72},
}