@article{ref1,
title="On self-produced and drug-produced relaxation",
journal="Behaviour research and therapy",
year="1968",
author="Davison, G. C. and Valins, S.",
volume="6",
number="3",
pages="401-402",
abstract="<p>[Abstract unavailable]</p><p>Language: en</p>",
language="en",
issn="0005-7967",
doi="",
url="http://dx.doi.org/"
}