@article{ref1,
title="The problem of chronic carbon monoxide poisoning",
journal="Wiener Klinische Wochenschrift",
year="1954",
author="Popper, L.",
volume="66",
number="25",
pages="453-455",
abstract="<p>[Abstract unavailable]</p><p>Language: de</p>",
language="de",
issn="0043-5325",
doi="",
url="http://dx.doi.org/"
}