@article{ref1,
title="Flight mechanics in the works of Leonardo and in "De motu animalium" of Gian Alfonso Borelli",
journal="Minerva medica",
year="1972",
author="Pezzi, G.",
volume="63",
number="38",
pages="2184-2188",
abstract="<p>[Abstract unavailable]</p><p>Language: it</p>",
language="it",
issn="0026-4806",
doi="",
url="http://dx.doi.org/"
}