@article{ref1,
title="The effect of a social crisis on the curve of diffusion",
journal="American sociological review",
year="1937",
author="Pemberton, H. Earl",
volume="2",
number="1",
pages="55-61",
abstract="<p>[Abstract unavailable]</p>",
language="",
issn="0003-1224",
doi="10.2307/2084565",
url="http://dx.doi.org/10.2307/2084565"
}