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JUCS - Journal of Universal Computer Science 18(16): 2234-2251
doi:
10.3217/jucs-018-16-2234
Received:
18 Feb 2012 | Approved:
26 Aug 2012 | Published:
28 Aug 2012
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Authors
Tarek F. Gharib 
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King Abdulaziz University, Jeddah, Saudi Arabia
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Ain Shams University, Cairo, Egypt
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Scientific Network for Innovation and Research Excellence, Auburn, 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.