@article{ref1,
title="Compensatory tracking performance of children in terms of linear operator theory",
journal="Acta psychologica",
year="1972",
author="Marsh, N. W. and Chang, J. W. and Rose, E.",
volume="36",
number="5",
pages="388-407",
abstract="<p>[Abstract unavailable]</p><p>Language: en</p>",
language="en",
issn="0001-6918",
doi="",
url="http://dx.doi.org/"
}