@article{ref1,
title="Activity patterns and leisure concepts among the elderly",
journal="American journal of occupational therapy",
year="1974",
author="Nystrom, E. P.",
volume="28",
number="6",
pages="337-345",
abstract="<p>[Abstract unavailable]</p><p>Language: en</p>",
language="en",
issn="0272-9490",
doi="",
url="http://dx.doi.org/"
}