@article{ref1,
title="The effects of prior fear experiences on acquired-drive learning",
journal="Journal of comparative and physiological psychology",
year="1960",
author="Kurtz, K. H. and Pearl, J.",
volume="53",
number="",
pages="201-206",
abstract="<p>[Abstract unavailable]</p><p>Language: en</p>",
language="en",
issn="0021-9940",
doi="",
url="http://dx.doi.org/"
}