@article{ref1,
title="Demand awareness and participant willingness as determinants of aggressive response to film violence",
journal="Journal of social psychology",
year="1978",
author="Perry, D. G. and Roots, R. D. and Perry, L. C.",
volume="105",
number="Second Half",
pages="265-275",
abstract="<p>[Abstract unavailable]</p> <p>Language: en</p>",
language="en",
issn="0022-4545",
doi="",
url="http://dx.doi.org/"
}