@article{ref1,
title="Influence of the daily program in day-care centers on the mental capacities of schoolchildren",
journal="Zeitschrift fur die Gesamte Hygiene und Ihre Grenzgebiete",
year="1974",
author="Róna, B.",
volume="20",
number="12",
pages="898-900",
abstract="<p>[Abstract unavailable]</p><p>Language: de</p>",
language="de",
issn="0049-8610",
doi="",
url="http://dx.doi.org/"
}