@article{ref1,
title="Ability to work. Conceptual exposition and a method of measurement",
journal="Acta socio-medica Scandinavica",
year="1970",
author="Eskelinen, E.",
volume="2",
number="2",
pages="109-115",
abstract="<p>[Abstract unavailable]</p><p>Language: en</p>",
language="en",
issn="0044-6041",
doi="",
url="http://dx.doi.org/"
}