@article{ref1,
title="Investigation of relationships between psychometric and biological intelligence",
journal="Journal of nervous and mental disease",
year="1956",
author="Reitan, R. M.",
volume="123",
number="6",
pages="536-541",
abstract="<p>[Abstract unavailable]</p><p>Language: en</p>",
language="en",
issn="0022-3018",
doi="",
url="http://dx.doi.org/"
}