@article{ref1,
title="Frustration phenomena in paired-associate learning",
journal="Journal of experimental psychology",
year="1972",
author="Champion, R. A. and McCann, T. E. and Ruffels, J. A.",
volume="95",
number="1",
pages="123-134",
abstract="<p>[Abstract unavailable]</p><p>Language: en</p>",
language="en",
issn="0022-1015",
doi="",
url="http://dx.doi.org/"
}