@article{ref1,
title="Health Aspects of Summer Recreation",
journal="American journal of public health",
year="1930",
author="Dalton, C. F.",
volume="20",
number="7",
pages="697-704",
abstract="<p>[Abstract unavailable]</p><p>Language: en</p>",
language="en",
issn="0090-0036",
doi="",
url="http://dx.doi.org/"
}