@article{Vitali2015,
author = {Vitali, A. and Aassve, A. and Lappegård, T.},
title= {Diffusion of childbearing within cohabitation},
year = {2015},
doi = {10.1007/s13524-015-0380-7},
volume = {52},
number = {2},
pages = {355--377},
}