@article{Castro Martín2010,
author = {Castro Martín, T.},
title= {Single motherhood and low birthweight in Spain: Narrowing social inequalities in health?},
year = {2010},
doi = {10.4054/DemRes.2010.22.27},
journal = {Demographic Research},
volume = {22},
number = {27},
pages = {863--890},
}