@article{ref1,
title="The effect of age differences in ability-extraneous performance variables on the assessment of intelligence in children, adults, and the elderly",
journal="Journal of gerontology",
year="1973",
author="Furry, C. A. and Baltes, P. B.",
volume="28",
number="1",
pages="73-80",
abstract="<p>[Abstract unavailable]</p><p>Language: en</p>",
language="en",
issn="0022-1422",
doi="",
url="http://dx.doi.org/"
}