@article{ref1,
title="What Is Public Opinion?",
journal="Crime and delinquency",
year="1958",
author="Gallup, G.",
volume="4",
number="4",
pages="305-306",
abstract="<p>[Abstract unavailable]</p>",
language="",
issn="0011-1287",
doi="10.1177/001112875800400401",
url="http://dx.doi.org/10.1177/001112875800400401"
}