@article{ref1,
title="Physical recklessness in adolescence: Trait or byproduct of depressive/suicidal states?",
journal="Journal of nervous and mental disease",
year="1990",
author="Clark, David C. and Sommerfeldt, Lorraine and Schwarz, Marvin and Hedeker, Donald and Watel, Lucie",
volume="178",
number="7",
pages="423-433",
abstract="<p>[Abstract unavailable]</p>",
language="en",
issn="0022-3018",
doi="10.1097/00005053-199007000-00003",
url="http://dx.doi.org/10.1097/00005053-199007000-00003"
}