@article{ref1,
title="Diurnal rhythm of excretion of catecholamine metabolites during sleep deprivation",
journal="Activitas nervosa superior",
year="1973",
author="Kuhn, Eric and Rysánek, K. and Kujalová, V. and Brodan, V. and Válek, J. and Rotrekl, J.",
volume="15",
number="2",
pages="129-131",
abstract="<p>[Abstract unavailable]</p> <p>Language: en</p>",
language="en",
issn="0001-7604",
doi="",
url="http://dx.doi.org/"
}