@article{Angrist2010,
author = {Angrist, Joshua  and Lavy, Victor  and Schlosser, Analia },
title= {Multiple Experiments for the Causal Link between the Quantity and Quality of Children},
year = {2010},
doi = {10.1086/653830},
journal = {Journal of Labor Economics},
volume = {28},
number = {4},
pages = {773--824},
}