@article{Black2010,
author = {Black, S.E. and Devereux, P.J. and Salvanes, K.G. },
title= {Small Family, Smart Family?: Family Size and the IQ Scores of Young Men },
year = {2010},
doi = {10.1353/jhr.2010.0001},
journal = {Journal of Human Resources },
volume = {45},
number = {1},
pages = {33--58},
}