Dear Fillipo,

thank you for your answer. Besides the fact of plagiarism I also have to 
say that the authors did not comply in any way with the copyright 
statement. IOS has a very very liberal one since they do not ask for any 
rights. Material can be reused by the authors. However, thy have to cite 
the IOS source if they want to reuse something. They did not. And from all 
what I saw that also haven't done this with all the other publications 
since I personally do not see too many differences between their huge 
number of articles. To be honest, a lot of authors act in the same way - 
they reuse parts of their old papers or re-submit very similar papers. Our 
system is asking for it. However, it remains for me unclear why they do not 
cite their own work (of course, I do understand that they avoid to cite the 
ACM papers - but the rest). This behavior makes them even more vulnerable 
since it is easier to take legal action if they violate copyright.

Have a nice weekend!
Rainer

"Experience is this valuable asset which allows us to identify the
   mistake immediately when we are doing it again and again!"

"Erfahrung ist jener kostbare Besitz, der uns befŠhigt, einen Fehler  
     sofort zu erkennen, wenn wir ihn immer wieder machen."


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Prof. Dr. Rainer Unland
University of Duisburg-Essen
Institute for Computer Science and Business Information Systems (ICB)
Practical Computer Science, especially Data Management Systems and Knowledge Representation
Schuetzenbahn 70
45117 Essen, Germany
WWW: http://www.cs.uni-essen.de/dawis/
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