@article{Ponczek2012,
author = {Ponczek, V.  and de Souza, A.P.},
title= {New evidence of the causal effect of family size on child quality in a developing country},
year = {2012},
doi = {10.1353/jhr.2012.0006},
journal = {Journal of Human Resources },
volume = {47},
number = {1},
pages = {64--106},
}