@article{ref1,
title="Leonardo da Vinci, sul and victim of genius (1452-1519)",
journal="Minerva medica",
year="1969",
author="Simili, A.",
volume="60",
number="102",
pages="5249-5273",
abstract="<p>[Abstract unavailable]</p><p>Language: it</p>",
language="it",
issn="0026-4806",
doi="",
url="http://dx.doi.org/"
}