@article{ref1,
title="Development and use of helmets as a means of protection against craniocerebral injury. I. Among the prehistoric peoples of Central and Southern Mexico",
journal="Bulletin of the Los Angeles Neurological Society",
year="1954",
author="Stendahl, A. Jr and Courville, C. B.",
volume="19",
number="1",
pages="1-17",
abstract="<p>[Abstract unavailable]</p><p>Language: en</p>",
language="en",
issn="1040-5925",
doi="",
url="http://dx.doi.org/"
}