@article{ref1,
title="Methods of studying the functional readiness of the child's body for physical exertion",
journal="Pediatriia",
year="1974",
author="Khrushchev, S. V. and Ivanitskaia, I. N.",
volume="",
number="2",
pages="62-65",
abstract="<p>[Abstract unavailable]</p><p>Language: ru</p>",
language="ru",
issn="0031-403X",
doi="",
url="http://dx.doi.org/"
}