@inbook{Sundström2009,
author = {Sundström, G.},
title= {Demography of aging in the Nordic Countries},
year = {2009},
doi = {10.1007/978-1-4020-8356-3_5},
editor = {Uhlenberg, P.},
booktitle = {International handbook of population aging},
address = {Dordrecht},
publisher = {Springer Netherlands},
pages = {91--111},
}