@article{ref1,
title="Risk and rank or safety first generalized",
journal="Economica",
year="1956",
author="Roy, A. D.",
volume="23",
number="91",
pages="214-228",
abstract="<p>[Abstract unavailable]</p>",
language="en",
issn="0013-0427",
doi="",
url="http://dx.doi.org/"
}