@article{ref1,
title="Effects of amphetamines on performance and on polygraphic sleep parameters in man",
journal="Advances in the biosciences",
year="1978",
author="Spiegel, R.",
volume="21",
number="",
pages="189-201",
abstract="<p>[Abstract unavailable]</p><p>Language: en</p>",
language="en",
issn="0065-3446",
doi="",
url="http://dx.doi.org/"
}