@article{ref1,
title="A systems analytic model of diagnosis. II. The diagnostic validity of abnormal perceptual behavior",
journal="Journal of clinical psychology (Hoboken)",
year="1969",
author="Nathan, P. E. and Simpson, H. F. and Andberg, M. M.",
volume="25",
number="2",
pages="115-119",
abstract="<p>[Abstract unavailable]</p><p>Language: en</p>",
language="en",
issn="0021-9762",
doi="",
url="http://dx.doi.org/"
}