@article{ref1,
title="Seismology in The United States",
journal="Bulletin of the Seismological Society of America",
year="1911",
author="Lawson, Andrew C.",
volume="1",
number="1",
pages="1-4",
abstract="<p>[Abstract unavailable]</p>",
language="",
issn="0037-1106",
doi="",
url="http://dx.doi.org/"
}