@article{ref1,
title="Initial note on the placebo effect of machines",
journal="Behavioral science",
year="1968",
author="Schwitzgebel, R. K. and Traugott, M.",
volume="13",
number="4",
pages="267-273",
abstract="<p>[Abstract unavailable]</p><p>Language: en</p>",
language="en",
issn="0005-7940",
doi="",
url="http://dx.doi.org/"
}