@article{ref1,
title="Psychological differences among moron and borderline mental defectives as a function of etiology. I. Visual-motor functioning",
journal="American journal of mental deficiency",
year="1953",
author="Feldman, I. S.",
volume="57",
number="3",
pages="484-494",
abstract="<p>[Abstract unavailable]</p><p>Language: en</p>",
language="en",
issn="0002-9351",
doi="",
url="http://dx.doi.org/"
}