@inbook{Keilman2005,
author = {Keilman, N.},
title= {Households and Families: Developed Countries},
year = {2005},
editor = {Caselli, G.},
editor = {Vallin, J.},
editor = {Wunsch, G.},
booktitle = {Demography: Analysis and Synthesis, Vol 3},
address = {New York},
publisher = {Academic Press},
pages = {457--476},
}