@article{ref1,
title="A study of the non-response group of an investigation into the conditions of living of pensioners",
journal="Acta socio-medica Scandinavica",
year="1972",
author="Persson, Henry",
volume="4",
number="1",
pages="25-36",
abstract="<p>[Abstract unavailable]</p><p>Language: en</p>",
language="en",
issn="0044-6041",
doi="",
url="http://dx.doi.org/"
}