@inbook{Billari2005,
author = {Billari, F.C.},
title= {Partnership, childbearing and parenting: trends of the 1990s},
year = {2005},
editor = {Macura, M.},
editor = {MacDonald, A.L.},
editor = {Haug, W.},
booktitle = {The New Demographic Regime. Population Challanges and Policy Responses},
address = {Genf},
publisher = {U.N.},
pages = {63--94},
}