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JUCS - Journal of Universal Computer Science 20(9): 1327-1351
doi:
10.3217/jucs-020-09-1327
Received:
18 Jun 2012 | Approved:
05 May 2014 | Published:
01 Sep 2014
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Authors
João Lopes
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Federal University of Rio Grande do Sul, Porto Alegre - RS, Brazil
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Federal University of Rio Grande do Sul, Porto Alegre, Brazil
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Federal University of Rio Grande do Sul, Porto Alegre, Brazil
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University of the Vale do Rio dos Sinos, São Leopoldo, Brazil
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Federal University of Pelotas, Pelotas, Brazil
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Federal University of Pelotas, Pelotas, Brazil
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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.