@article{Barclay2017,
author = {Barclay, K.J. and Kolk, M.},
title= {The long-term cognitive and socioeconomic consequences of birth intervals: A within-family sibling comparison using Swedish register data},
year = {2017},
doi = {10.1007/s13524-017-0550-x},
volume = {54},
number = {2},
pages = {459--484},
}