@article{ref1,
title="Some aspects to the doctrine of double effect",
journal="Canadian journal of philosophy",
year="1975",
author="Frey, R. G.",
volume="5",
number="2",
pages="259-283",
abstract="<p>[Abstract unavailable]</p><p>Language: en</p>",
language="en",
issn="0045-5091",
doi="",
url="http://dx.doi.org/"
}