@article{ref1,
title="Head protection in England before the First World War",
journal="Neurosurgery",
year="2001",
author="Boylston, Anthea",
volume="49",
number="2",
pages="478-479",
abstract="Abstract unavailable.",
language="",
issn="0148-396X",
doi="",
url="http://dx.doi.org/"
}