@inbook{Kohler2006,
author = {Kohler, H.-P. and Billari, F. and Ortega, J.},
title= {Low fertility in Europe: Causes, implications and policy options},
year = {2006},
editor = {Harris, F.R.},
booktitle = {The Baby Bust: Who will do the Work? Who Will Pay the Taxes?},
address = {Lanham, MD},
publisher = {Rowman & Littlefield Publishers},
pages = {48--109},
}