@article{ref1,
title="Effects of psychodysleptic drug psilocybin on visual perception. Changes in brightness preference",
journal="Experientia",
year="1969",
author="Fischer, Rico and Hill, R. M. and Warshay, D.",
volume="25",
number="2",
pages="166-169",
abstract="<p>[Abstract unavailable]</p><p>Language: en</p>",
language="en",
issn="0014-4754",
doi="",
url="http://dx.doi.org/"
}