@inbook{Bengtsson2010,
author = {Bengtsson, T. and Scott, K.},
title= {The ageing population},
year = {2010},
doi = {10.1007/978-3-642-12612-3_2},
editor = {Bengtsson, T.},
booktitle = {Population ageing: A threat to the welfare state?},
address = {Berlin },
publisher = {Springer},
pages = {7--22},
}