@article{ref1,
title="Repeated contusive injuries and tumors",
journal="Rivista Degli Infortuni e delle Malattie Professionali",
year="1955",
author="Barni, M.",
volume="42",
number="2",
pages="222-232",
abstract="<p>[Abstract unavailable]</p><p>Language: it</p>",
language="it",
issn="0035-5836",
doi="",
url="http://dx.doi.org/"
}