@article{ref1,
title="An answer to some inquiries concerning the eruptions of Mount Aetna, an. 1669.  communicated by some inquisitive English merchants, now residing in Sicily",
journal="Philosophical transactions of the Royal Society of London (1665)",
year="1669",
author="",
volume="4",
number="51",
pages="1028-1034",
abstract="<p>[Abstract unavailable]</p>",
language="",
issn="0370-2316",
doi="",
url="http://dx.doi.org/"
}