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JUCS - Journal of Universal Computer Science 4(9): 748-762
doi:
10.3217/jucs-004-09-0748
Published:
28 Sep 1998
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Authors
Anna Hester 
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Catholic University of Rio de Janeiro - PUC-Rio, Brazil
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Catholic University of Rio de Janeiro - PUC-Rio, Brazil
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PUC-Rio, Rio de Janeiro, 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.