@article{Baranowska2011,
author = {Baranowska, A. and Matysiak, A.},
title= {Does parenthood increase happiness? Evidence for Poland},
year = {2011},
doi = {10.1553/populationyearbook2011s307},
journal = {Vienna Yearbook of Population Research},
volume = {9},
pages = {307‒325},
}