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JUCS - Journal of Universal Computer Science 20(12): 1690-1707
doi:
10.3217/jucs-020-12-1690
Received:
31 May 2014 | Approved:
15 Oct 2014 | Published:
01 Nov 2014
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Authors
Indika Perera 
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University of Moratuwa, Moratuwa, Sri Lanka
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University of Moratuwa, Moratuwa, Sri Lanka
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University of St Andrews, Fife, United Kingdom
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University of St Andrews, Saint Andrews, United Kingdom
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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.