@article{ref1,
title="Extracardial chronotropic influences on the heart during fatigue",
journal="Biulleten' Eksperimental'noĭ Biologii i Meditsiny",
year="1971",
author="Vaĭsman, A. I.",
volume="72",
number="9",
pages="13-16",
abstract="<p>[Abstract unavailable]</p><p>Language: ru</p>",
language="ru",
issn="0365-9615",
doi="",
url="http://dx.doi.org/"
}