@article{ref1,
title="Martial arts in the classroom",
journal="Clearing house",
year="1990",
author="Kwak, Han S. and Vockell, Edward L.",
volume="64",
number="1",
pages="61-63",
abstract="<p>[Abstract unavailable]</p>",
language="en",
issn="0009-8655",
doi="10.1080/00098655.1990.9955809",
url="http://dx.doi.org/10.1080/00098655.1990.9955809"
}