@inbook{Sobotka2008,
author = {Sobotka, T. },
title= {Does Persistent Low Fertility Threaten the Future of European Populations?},
year = {2008},
editor = {Surkyn, J.},
editor = {Deboosere, P. },
editor = {van Bavel, J. },
booktitle = {Demographic Challenges for the 21st Century. A State of Art in Demography},
address = {Brussels},
publisher = {VUBPRESS},
pages = {27--89},
}