@article{ref1,
title="Psychometric studies of subjects exposed to the noise of jet engines",
journal="La Medicina del lavoro",
year="1969",
author="Calapaj, G. G. and Bellia, G.",
volume="60",
number="1",
pages="43-52",
abstract="<p>[Abstract unavailable]</p><p>Language: it</p>",
language="it",
issn="0025-7818",
doi="",
url="http://dx.doi.org/"
}