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JUCS - Journal of Universal Computer Science 14(7): 1105-1117
doi:
10.3217/jucs-014-07-1105
Published:
01 Apr 2008
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Authors
SungSoo Lee 
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Yeungnam University, Yeungnam, Republic of Korea
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Catholic University of Daegu, Daegu, Republic of Korea
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Yeungnam University, Yeungnam, Republic of Korea
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Conflict of interest
The authors have declared that no competing interests exist.
This article is freely available under the J.UCS Open Content License.