@inbook{Vallin2011,
author = {Vallin, J.},
title= {Vieillissement de la population [Population ageing]},
year = {2011},
editor = {Meslé, F.},
editor = {Toulemon, L.},
editor = {Véron, J.},
booktitle = {Dictionnaire de démographie et des sciences de la population [Dictionary of demography and of population sciences]},
address = {Paris},
publisher = {Armand Collin},
pages = {506--508},
}