@inbook{Köppen2017,
author = {Köppen, K. and Mazuy, M. and Toulemon, L. },
title= {Childlessness in France States},
year = {2017},
doi = {10.1007/978-3-319-44667-7_4},
editor = {Kreyenfeld, M.},
editor = {Konietzka, D. },
booktitle = {Childlessness in Europe: Contexts, causes, and consequences},
address = {Cham},
publisher = {Springer International},
pages = {77--95},
}