@article{ref1,
title="Operation Arrowhead (Alvar Nuñez Cabeza de Vaca)",
journal="Arizona medicine",
year="1973",
author="de Grazia, T.",
volume="30",
number="9",
pages="632-632",
abstract="<p>[Abstract unavailable]</p><p>Language: en</p>",
language="en",
issn="0004-1556",
doi="",
url="http://dx.doi.org/"
}