@book{Hoorens2011,
author = {Hoorens, S. and Clift, J. and Staetsky, L. and Janta, B. and Diepeveen, S. and Jones, M.M. and Grant, J.},
title= {Low fertility in Europe. Is there still reason to worry?},
year = {2011},
URL = {http://www.rand.org/},
publisher = {RAND Europe},
}