@article{ref1,
title="Propoxyphene. Two fatalities due to overdose",
journal="Virginia medical monthly",
year="1973",
author="Rios, J. F.",
volume="100",
number="1",
pages="47-49",
abstract="<p>[Abstract unavailable]</p><p>Language: en</p>",
language="en",
issn="0042-6644",
doi="",
url="http://dx.doi.org/"
}