@article{ref1,
title="Development of search and object permanence during infancy",
journal="Psychological bulletin",
year="1975",
author="Harris, P. L.",
volume="82",
number="3",
pages="332-344",
abstract="<p>[Abstract unavailable]</p><p>Language: en</p>",
language="en",
issn="0033-2909",
doi="",
url="http://dx.doi.org/"
}