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JUCS - Journal of Universal Computer Science 3(11): 1226-1240
doi:
10.3217/jucs-003-11-1226
Published:
28 Nov 1997
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Author
Peter Hertling 
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Department of Computer Science, The University of Auckland, Auckland, New Zealand
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Conflict of interest
The author has declared that no competing interests exist.
This article is freely available under the J.UCS Open Content License.