@article{ref1,
title="Determination of the Heinis personal constant",
journal="Journal of consulting psychology",
year="1937",
author="Voss, H. A. and Dunlap, J. W.",
volume="1",
number="4",
pages="57-61",
abstract="This article presents nomographs and directions for their use in determining the ratio of a function of mental age to a function of chronological age which is known as the Heinis personal constant. (PsycINFO Database Record (c) 2012 APA, all rights reserved)<p /><p>Language: en</p>",
language="en",
issn="0095-8891",
doi="10.1037/h0055684",
url="http://dx.doi.org/10.1037/h0055684"
}