@article{ref1,
title="Risk-taking and need for achievement",
journal="Acta psychologica",
year="1963",
author="Rim, Y.",
volume="21",
number="",
pages="108-115",
abstract="<p>[Abstract unavailable]</p>",
language="",
issn="0001-6918",
doi="",
url="http://dx.doi.org/"
}