@article{ref1,
title="Intelligence-A Definition",
journal="Psychol Clin",
year="1922",
author="Witmer, Lightner",
volume="14",
number="3-4",
pages="65-67",
abstract="<p>[Abstract unavailable]</p><p>Language: en</p>",
language="en",
issn="",
doi="",
url="http://dx.doi.org/"
}