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JUCS - Journal of Universal Computer Science 11(9): 1470-1481
doi:
10.3217/jucs-011-09-1470
Published:
28 Sep 2005
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Authors
Pilar Sancho 
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Complutense University of Madrid, Madrid, Spain
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CES Felipe II, Aranjuez, Madrid, Spain
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Dpto.Sistemas Informáticos y Programación, Fac. Informática, Universidad Complutense, Madrid, 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.