@article{ref1,
title="Statistical models for inter- and intraindividual variability",
journal="Research quarterly",
year="1974",
author="Eckert, H. M.",
volume="45",
number="2",
pages="162-170",
abstract="<p>[Abstract unavailable]</p><p>Language: en</p>",
language="en",
issn="0034-5377",
doi="",
url="http://dx.doi.org/"
}