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JUCS - Journal of Universal Computer Science 7(11): 1088-1112
doi:
10.3217/jucs-007-11-1088
Published:
28 Nov 2001
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Authors
Charles Wallace 
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Computer Science Dept., Michigan Technological University, Houghton, MI, United States of America
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Dept. d'informatique, Université du Québec à Montréal, Montréal, Canada
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Computing Science Dept., University of Alberta, Edmonton, Canada
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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.