@article{ref1,
title="The changing clinical picture of schizophrenia",
journal="Schizophrenia bulletin",
year="1977",
author="Durell, J. and Katz, M. M.",
volume="3",
number="4",
pages="528-530",
abstract="<p>[Abstract unavailable]</p><p>Language: en</p>",
language="en",
issn="0586-7614",
doi="",
url="http://dx.doi.org/"
}