@article{ref1,
title="Fitness for air service",
journal="Acta Belgica de arte medicinali et pharmaceutica militari",
year="1958",
author="Evrard, E.",
volume="111",
number="2",
pages="107-130",
abstract="<p>[Abstract unavailable]</p><p>Language: nl</p>",
language="nl",
issn="",
doi="",
url="http://dx.doi.org/"
}