@article{ref1,
title="Aortic valve insufficiency resulting froma bullet wound of the heart",
journal="Arkhiv Patologii",
year="1967",
author="Stepanov, K. N.",
volume="29",
number="8",
pages="73-75",
abstract="<p>[Abstract unavailable]</p><p>Language: ru</p>",
language="ru",
issn="0004-1955",
doi="",
url="http://dx.doi.org/"
}