@article{ref1,
title="Changes in the functional status of the organism of schoolchildren during the school day",
journal="Gigiena i Sanitariia",
year="1969",
author="Silla, R. V.",
volume="34",
number="10",
pages="98-103",
abstract="<p>[Abstract unavailable]</p><p>Language: ru</p>",
language="ru",
issn="0016-9900",
doi="",
url="http://dx.doi.org/"
}