@article{ref1,
title="Venous trauma",
journal="Major problems in clinical surgery",
year="1979",
author="Vollmar, J.",
volume="23",
number="",
pages="191-199",
abstract="<p>[Abstract unavailable]</p><p>Language: en</p>",
language="en",
issn="0025-1062",
doi="",
url="http://dx.doi.org/"
}