@article{ref1,
title="The emotional timeline of September 11, 2001",
journal="Psychological science",
year="2010",
author="Back, Mitja D. and Küfner, Albrecht C. P. and Egloff, Boris",
volume="21",
number="10",
pages="1417-1419",
abstract="<p>[Abstract unavailable]</p> <p>Language: en</p>",
language="en",
issn="0956-7976",
doi="10.1177/0956797610382124",
url="http://dx.doi.org/10.1177/0956797610382124"
}