@article{ref1,
title="The daily routine of rural school children 10 to 14 years of age. Leisure-time activity and sleep",
journal="Zeitschrift fur die Gesamte Hygiene und Ihre Grenzgebiete",
year="1967",
author="Wunderlich, J. and Schmidt, W.",
volume="13",
number="5",
pages="348-354",
abstract="<p>[Abstract unavailable]</p><p>Language: de</p>",
language="de",
issn="0049-8610",
doi="",
url="http://dx.doi.org/"
}