@article{ref1,
title="Rare case of a foreign body in a child's cardiac cavity",
journal="Vestnik Khirurgii Imeni I. I. Grekova",
year="1972",
author="Koptel'tsev, V. V. and Korol'chuk, V. D.",
volume="107",
number="1",
pages="130-131",
abstract="<p>[Abstract unavailable]</p><p>Language: ru</p>",
language="ru",
issn="0042-4625",
doi="",
url="http://dx.doi.org/"
}