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JUCS - Journal of Universal Computer Science 16(5): 800-820
doi:
10.3217/jucs-016-05-0800
Published:
01 Mar 2010
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Authors
Lei Li 
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Columbus State University, Columbus, United States of America
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Georgia State University, Atlanta, United States of America
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Georgia State University, Atlanta, United States of America
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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.