@article{ref1,
title="Site, state, and subject characteristics of palmar skin potential levels",
journal="Psychophysiology",
year="1972",
author="Christie, M. J. and Venables, P. H.",
volume="9",
number="6",
pages="645-649",
abstract="<p>[Abstract unavailable]</p><p>Language: en</p>",
language="en",
issn="0048-5772",
doi="",
url="http://dx.doi.org/"
}