@article{ref1,
title="Cognition: mental rotation",
journal="American journal of psychiatry",
year="2000",
author="Georgopoulos, A. P.",
volume="157",
number="5",
pages="695-695",
abstract="<p>[Abstract unavailable]</p><p>Language: en</p>",
language="en",
issn="0002-953X",
doi="",
url="http://dx.doi.org/"
}