@article{ref1,
title="Electrocardiography in medical examination in aviation",
journal="Voenno-Meditsinskii Zhurnal",
year="1957",
author="Knabengof, V. G.",
volume="5",
number="11",
pages="59-62",
abstract="<p>[Abstract unavailable]</p><p>Language: ru</p>",
language="ru",
issn="0026-9050",
doi="",
url="http://dx.doi.org/"
}