@article{Aassve2012,
author = {Aassve, A. and Meroni, E. and Pronzato, C. },
title= {Grandparenting and Childbearing in the Extended Family},
year = {2012},
doi = {10.1007/s10680-012-9273-2},
journal = {European Journal of Population},
volume = {28},
number = {4},
pages = {499--518},
}