@article{ref1,
title="An historical introduction to ideas about voluntary euthanasia: with a bibliographic survey and guide for interdisciplinary studies",
journal="OMEGA - Journal of death and dying",
year="1973",
author="Gruman, Gerald J.",
volume="4",
number="2",
pages="87-138",
abstract="<p>[Abstract unavailable]</p><p>Language: en</p>",
language="en",
issn="0030-2228",
doi="",
url="http://dx.doi.org/"
}