@article{ref1,
title="The concept of collective safety of workers in enterprise",
journal="Rivista Degli Infortuni e delle Malattie Professionali",
year="1964",
author="Lega, C.",
volume="51",
number="",
pages="22-45",
abstract="<p>[Abstract unavailable]</p><p>Language: it</p>",
language="it",
issn="0035-5836",
doi="",
url="http://dx.doi.org/"
}