@article{ref1,
title="Tolerance to low acetylcholinesterase levels: modification of behavior without acute behavioral change",
journal="Psychopharmacology",
year="1972",
author="Chippendale, T. J. and Zawolkow, G. A. and Russell, R. W. and Overstreet, David H.",
volume="26",
number="2",
pages="127-139",
abstract="<p>[Abstract unavailable]</p><p>Language: en</p>",
language="en",
issn="0033-3158",
doi="",
url="http://dx.doi.org/"
}