@article{ref1,
title="A case of heart contusion",
journal="Klinicheskaia meditsina",
year="1987",
author="Burtsev, V. I. and Skamorina, O. P.",
volume="65",
number="1",
pages="138-140",
abstract="<p>[Abstract unavailable]</p><p>Language: ru</p>",
language="ru",
issn="0023-2149",
doi="",
url="http://dx.doi.org/"
}