@article{ref1,
title="Circadian periodicity in self stimulation with light: effect of previous light exposure",
journal="Acta psychologica",
year="1970",
author="Thor, D. H.",
volume="32",
number="2",
pages="186-191",
abstract="<p>[Abstract unavailable]</p><p>Language: en</p>",
language="en",
issn="0001-6918",
doi="",
url="http://dx.doi.org/"
}