@article{ref1,
title="Pneumatic hammer damage to internal organs, especially the colon",
journal="Medizinische Monatsschrift",
year="1968",
author="Burkhardt, G. and Falk, H. and Gläser, C.",
volume="22",
number="4",
pages="159-163",
abstract="<p>[Abstract unavailable]</p><p>Language: de</p>",
language="de",
issn="0025-8474",
doi="",
url="http://dx.doi.org/"
}