@article{ref1,
title="Studying volcanic eruptions with aerial drones",
journal="Proceedings of the National Academy of Sciences of the United States of America",
year="2013",
author="Williams, Sarah C. P.",
volume="110",
number="27",
pages="10881-10881",
abstract="<p>[Abstract unavailable]</p> <p>Language: en</p>",
language="en",
issn="0027-8424",
doi="10.1073/pnas.1309922110",
url="http://dx.doi.org/10.1073/pnas.1309922110"
}