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JUCS - Journal of Universal Computer Science 16(1): 3-21
doi:
10.3217/jucs-016-01-0003
Published:
01 Jan 2010
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Authors
Yang Xu 
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Southwest Jiaotong University, Chengdu, China
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Ulster University, Ulster, United Kingdom
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University of Jaén, Jaén, Spain
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Belgian Nuclear Research Centre, Mol, Belgium
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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.