@article{ref1,
title="New approaches to the study of day care",
journal="Human nature",
year="1990",
author="Lamb, Michael F.",
volume="1",
number="2",
pages="207-210",
abstract="<p>[Abstract unavailable]</p><p>Language: en</p>",
language="en",
issn="1045-6767",
doi="10.1007/BF02692152",
url="http://dx.doi.org/10.1007/BF02692152"
}