@article{ref1,
title="Effects of amphetamine and barbiturate in a serial reaction task under paced and self-paced conditions",
journal="Acta psychologica",
year="1978",
author="Frowein, H. W. and Sanders, A. F.",
volume="42",
number="4",
pages="263-276",
abstract="<p>[Abstract unavailable]</p><p>Language: en</p>",
language="en",
issn="0001-6918",
doi="",
url="http://dx.doi.org/"
}