@article{ref1,
title="Non-psychotic depressive disorders: a ten year follow-up",
journal="Acta psychiatrica Scandinavica. Supplementum",
year="1974",
author="D'Elia, G. and von Knorring, L. and Perris, C.",
volume="255",
number="",
pages="173-186",
abstract="<p>[Abstract unavailable]</p><p>Language: en</p>",
language="en",
issn="0065-1591",
doi="",
url="http://dx.doi.org/"
}