@article{ref1,
title="Studies on the head injuries of human subjects in advanced age. I",
journal="Keio journal of medicine",
year="1973",
author="Yoshii, N. and Oshida, K.",
volume="22",
number="1",
pages="19-23",
abstract="<p>[Abstract unavailable]</p><p>Language: en</p>",
language="en",
issn="0022-9717",
doi="",
url="http://dx.doi.org/"
}