@article{ref1,
title="Continued participation in flight training as a means of reducing the general aviation accident rate--a revalidation",
journal="Aerospace medicine",
year="1971",
author="Dougherty, J. D.",
volume="42",
number="10",
pages="1121-1122",
abstract="<p>[Abstract unavailable]</p><p>Language: en</p>",
language="en",
issn="0001-9402",
doi="",
url="http://dx.doi.org/"
}