@inbook{Ermisch2009,
author = {Ermisch, J. and Siedler, T.},
title= {Living apart together},
year = {2009},
editor = {Brynin, M.},
editor = {Ermisch, J.},
booktitle = {Changing relationships},
address = {New York},
publisher = {Routledge},
pages = {29--43},
}