@article{ref1,
title="Alpha enhancement research: a review",
journal="Biological psychiatry",
year="1975",
author="Travis, T. A. and Kondo, C. Y. and Knott, J. R.",
volume="10",
number="1",
pages="69-89",
abstract="<p>[Abstract unavailable]</p><p>Language: en</p>",
language="en",
issn="0006-3223",
doi="",
url="http://dx.doi.org/"
}