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JUCS - Journal of Universal Computer Science 20(7): 1026-1045
doi:
10.3217/jucs-020-07-1026
Received:
31 Jan 2014 | Approved:
30 Jun 2014 | Published:
01 Jul 2014
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Authors
Sergio Moya 
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Polytechnical University of Catalonia, Barcelona, Spain
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Polytechnical University of Catalonia, Barcelona, Spain
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Polytechnical University of Catalonia, Barcelona, 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.