@inbook{Keely2009,
author = {Keely, C.B.},
title= {Replacement migration},
year = {2009},
doi = {10.1007/978-1-4020-8356-3_17},
editor = {Uhlenberg, P.},
booktitle = {International handbook of population aging},
address = {London},
publisher = {Springer},
pages = {395--405},
}