@article{Downey2004,
author = {Downey, D.B. and Condron, D.J.},
title= {Playing well with others in kindergarten: The benefit of siblings at home},
year = {2004},
doi = {10.1111/j.1741-3737.2004.00024.x},
journal = {Journal of Marriage and Family},
volume = {66},
number = {2},
pages = {333--350},
}