@article{ref1,
title="On a relationship between chronological age and functional age (author's transl)",
journal="Aktuelle Gerontologie",
year="1981",
author="Beier, W.",
volume="11",
number="3",
pages="106-107",
abstract="If the biological age depends of both the ageing rate given by clinical data, and the chronological age, then an equation can be given for the calculation of the biological age.<p /><p>Language: de</p>",
language="de",
issn="0300-5704",
doi="",
url="http://dx.doi.org/"
}