@article{ref1,
title="The measurement of early intellectual functioning: contributions from developmental psychology",
journal="Monograph of the American Association of Mental Deficiency",
year="1973",
author="Wachs, T. D.",
volume="",
number="1",
pages="28-45",
abstract="<p>[Abstract unavailable]</p><p>Language: en</p>",
language="en",
issn="0098-7123",
doi="",
url="http://dx.doi.org/"
}