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JUCS - Journal of Universal Computer Science 20(2): 79-106
doi:
10.3217/jucs-020-02-0079
Received:
09 Jul 2012 | Approved:
30 Jan 2014 | Published:
01 Feb 2014
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Authors
Carlos Blanco 
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University of Cantabria, Santander, Spain
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University of Castilla-La Mancha, Ciudad Real, Spain
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University of Alicante, Alicante, 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.