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JUCS - Journal of Universal Computer Science 16(21): 3314-3323
doi:
10.3217/jucs-016-21-3314
Published:
01 Dec 2010
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Author
Gerhard Wurzinger 
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Graz University of Technology, Graz, Austria
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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.