@article{ref1,
title="Incidence of loss of consciousness in 1,980 Air Force personnel",
journal="Aerospace medicine",
year="1960",
author="Lamb, L. E. and Green, H. C. and Combs, J. J. and Cheeseman, S. A. and Hammond, J.",
volume="31",
number="",
pages="973-988",
abstract="<p>[Abstract unavailable]</p><p>Language: en</p>",
language="en",
issn="0001-9402",
doi="",
url="http://dx.doi.org/"
}