@article{ref1,
title="Morbidity in adolescent students of technical schools",
journal="Sovetskoe Zdravookhranenie",
year="1978",
author="Kovalenko, V. V. and Sazanchuk, I. F.",
volume="",
number="1",
pages="40-42",
abstract="<p>[Abstract unavailable]</p><p>Language: ru</p>",
language="ru",
issn="0038-5239",
doi="",
url="http://dx.doi.org/"
}