@article{ref1,
title="Spare time of college students",
journal="Arztliche Jugendkunde",
year="1975",
author="Vancurová, E. and Provanzniková, H. and Mokrý, Z. and Janda, F.",
volume="66",
number="3",
pages="251-253",
abstract="<p>[Abstract unavailable]</p><p>Language: de</p>",
language="de",
issn="0001-9518",
doi="",
url="http://dx.doi.org/"
}