@article{ref1,
title="Positive occipital sharp transients of sleep: relationships to nocturnal sleep cycle in man",
journal="Electroencephalography and clinical neurophysiology",
year="1974",
author="Vignaendra, V. and Matthews, R. L. and Chatrian, G. E.",
volume="37",
number="3",
pages="239-246",
abstract="<p>[Abstract unavailable]</p><p>Language: en</p>",
language="en",
issn="0013-4694",
doi="",
url="http://dx.doi.org/"
}