@article{ref1,
title="The difference between zero and one",
journal="Clinical neurosurgery",
year="1976",
author="Sweet, W.",
volume="23",
number="",
pages="32-51",
abstract="<p>[Abstract unavailable]</p><p>Language: en</p>",
language="en",
issn="0069-4827",
doi="",
url="http://dx.doi.org/"
}