@article{ref1,
title="Elevation and reduction of plasma tryptophan and their effects on aggression and perceptual sensitivity in normal males",
journal="Aggressive behavior",
year="1986",
author="Smith, S. E. and Pihl, R. O. and Young, Simon N. and Ervin, F. R.",
volume="12",
number="6",
pages="393-407",
abstract="<p>[Abstract unavailable]</p>",
language="en",
issn="0096-140X",
doi="",
url="http://dx.doi.org/"
}