@article{ref1,
title="Problems with the all-day kindergarten: Presumed or real?",
journal="Early childhood research quarterly",
year="1989",
author="Olsen, Deborah",
volume="4",
number="2",
pages="267-269",
abstract="<p>[Abstract unavailable]</p>",
language="",
issn="0885-2006",
doi="10.1016/S0885-2006(89)80008-0",
url="http://dx.doi.org/10.1016/S0885-2006(89)80008-0"
}