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JUCS - Journal of Universal Computer Science 20(13): 1766-1790
doi:
10.3217/jucs-020-13-1766
Received:
04 Jan 2014 | Approved:
06 Sep 2014 | Published:
28 Nov 2014
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Authors
Natasha Lino 
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The University of Edinburgh, Edinburgh, United Kingdom
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Federal University of Paraíba, João Pessoa, Brazil
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The University of Edinburgh, Edinburgh, United Kingdom
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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.