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JUCS - Journal of Universal Computer Science 16(12): 1612-1632
doi:
10.3217/jucs-016-12-1612
Published:
28 Jun 2010
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Authors
Luis A. Guerrero 
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Universidad de Chile, Chile
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Universidad de Chile, Santiago, Chile
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Universidad de Chile, Santiago de Chile, Chile
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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.