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JUCS - Journal of Universal Computer Science 10(7): 872-891
doi:
10.3217/jucs-010-07-0872
Published:
28 Jul 2004
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Authors
Ademir Alvarenga De Oliveira 
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Federal University of Minas Gerais, Brazil
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Federal University of Ouro Preto, Brazil
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Federal University of Ouro Preto, Brazil
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Universidade Federal de Minas Gerais, 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.