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JUCS - Journal of Universal Computer Science 17(8): 1183-1201
doi:
10.3217/jucs-017-08-1183
Published:
28 Apr 2011
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Authors
Hui Ma 
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Victoria University of Wellington, Wellington, New Zealand
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Software Competence Center Hagenberg and Johannes Kepler University Linz, Hagenberg, Austria
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Christian Albrechts University Kiel, Kiel, Germany
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University of Otago, Dunedin, New Zealand
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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.