@article{ref1,
title="Predicting vulnerability to hopelessness: A longitudinal analysis",
journal="Journal of nervous and mental disease",
year="1991",
author="Bonner, Ronald L. and Rich, Alexander R.",
volume="179",
number="1",
pages="29-32",
abstract="<p>[Abstract unavailable]</p>",
language="en",
issn="0022-3018",
doi="10.1097/00005053-199101000-00006",
url="http://dx.doi.org/10.1097/00005053-199101000-00006"
}