@article{ref1,
title="Arterial spasm and slowing of the cerebral circulation in the ischaemia of head injury",
journal="Journal of neurology, neurosurgery, and psychiatry",
year="1973",
author="Macpherson, P. and Graham, D. I.",
volume="36",
number="6",
pages="1069-1072",
abstract="<p>[Abstract unavailable]</p><p>Language: en</p>",
language="en",
issn="0022-3050",
doi="",
url="http://dx.doi.org/"
}