@article{ref1,
title="Effect of chronic carbon dioxide poisoning",
journal="Deutsche Gesundheitswesen",
year="1957",
author="Klier, E.",
volume="12",
number="30",
pages="934-941",
abstract="<p>[Abstract unavailable]</p> <p>Language: de</p>",
language="de",
issn="0012-0219",
doi="",
url="http://dx.doi.org/"
}