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JUCS - Journal of Universal Computer Science 18(20): 2798-2831
doi:
10.3217/jucs-018-20-2798
Received:
11 Jul 2011 | Approved:
15 Oct 2012 | Published:
01 Dec 2012
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Authors
Dario Della Monica 
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Reykjavik University, Reykjavik, Iceland
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Technical Institute of Denmark, Copenhagen, Denmark
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University of Udine, Udine, Italy
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University of Murcia, Murcia, Spain
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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.