@article{ref1,
title="Four years of medical supervision of the flight personnel of an important air line",
journal="Bruxelles Medical",
year="1950",
author="Allard, A.",
volume="30",
number="36",
pages="1862-1873",
abstract="<p>[Abstract unavailable]</p><p>Language: un</p>",
language="un",
issn="0068-3027",
doi="",
url="http://dx.doi.org/"
}