@article{ref1,
title="On the Law of Certainty",
journal="Med Crit Psychol J",
year="1863",
author="Davies, W. G.",
volume="3",
number="11",
pages="432-459",
abstract="<p>[Abstract unavailable]</p><p>Language: en</p>",
language="en",
issn="",
doi="",
url="http://dx.doi.org/"
}