* Department of Information Engineering, Computer Science and Mathematics,
University of L'Aquila, 67010 L'Aquila (Italy)
** Department of Computer Science and Applied Cognitive Science, Unviersity of Duisburg-Essen, 47057 Duisburg (Germany)
2017-10-07: submitted by Davide Di Ruscio, Barbara König,
metadata incl. bibliographic data published under Creative Commons CC0 2017-10-12: published on CEUR-WS.org
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