@article{ref1,
title="Coma--classification and process observation",
journal="Hefte zur Unfallheilkunde",
year="1978",
author="Frowein, R. A. and Steinmann, H. W. and Terhaag, D. and auf der Haar, K.",
volume="",
number="132",
pages="187-195",
abstract="<p>[Abstract unavailable]</p><p>Language: de</p>",
language="de",
issn="0085-1469",
doi="",
url="http://dx.doi.org/"
}