@article{ref1,
title="The effect of menstruation on cognitive and perceptual-motor behavior: a review",
journal="Psychosomatic medicine",
year="1973",
author="Sommer, B.",
volume="35",
number="6",
pages="515-534",
abstract="<p>[Abstract unavailable]</p><p>Language: en</p>",
language="en",
issn="0033-3174",
doi="",
url="http://dx.doi.org/"
}