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JUCS - Journal of Universal Computer Science 18(4): 554-576
doi:
10.3217/jucs-018-04-0554
Received:
28 Sep 2011 | Approved:
14 Dec 2011 | Published:
28 Feb 2012
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Authors
I-Hsien Ting
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National University of Kaohsiung, Kaohsiung, Taiwan
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National University of Kaohsiung, Kaohsiung, Taiwan
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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.