@article{ref1,
title="Injuries to the colon and rectum",
journal="Hefte zur Unfallheilkunde",
year="1961",
author="Hoffmann, H.",
volume="66",
number="",
pages="165-172",
abstract="<p>[Abstract unavailable]</p><p>Language: de</p>",
language="de",
issn="0085-1469",
doi="",
url="http://dx.doi.org/"
}