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JUCS - Journal of Universal Computer Science 17(14): 2029-2047
doi:
10.3217/jucs-017-14-2029
Published:
01 Oct 2011
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Authors
Ying Pan
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Guangxi Teachers Education University, Nanning, China
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South China Normal University, Guangzhou, China
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Sun Yat-sen University, Guangzhou, China
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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.