@article{ref1,
title="Level of proficiency and multidimensional viewpoints about problem similarity",
journal="Journal of applied psychology",
year="1967",
author="Landis, D. and Silver, C. A. and Jones, J. Mary and Messick, S.",
volume="51",
number="3",
pages="216-222",
abstract="<p>[Abstract unavailable]</p><p>Language: en</p>",
language="en",
issn="0021-9010",
doi="",
url="http://dx.doi.org/"
}