@article{ref1,
title="Depressive states in the elderly",
journal="Tijdschrift voor Ziekenverpleging",
year="1968",
author="Cahn, L. A.",
volume="21",
number="13",
pages="529-534",
abstract="<p>[Abstract unavailable]</p> <p>Language: nl</p>",
language="nl",
issn="0303-6456",
doi="",
url="http://dx.doi.org/"
}