@article{ref1,
title="Some experience from biorhythm studies in adolescents",
journal="Activitas nervosa superior",
year="1970",
author="Cílek, M.",
volume="12",
number="2",
pages="154-154",
abstract="<p>[Abstract unavailable]</p> <p>Language: en</p>",
language="en",
issn="0001-7604",
doi="",
url="http://dx.doi.org/"
}