@article{ref1,
title="African infant precocity",
journal="Psychological bulletin",
year="1972",
author="Warren, N.",
volume="78",
number="5",
pages="353-367",
abstract="<p>[Abstract unavailable]</p><p>Language: en</p>",
language="en",
issn="0033-2909",
doi="",
url="http://dx.doi.org/"
}