1. School of Information Technology (ITE), Halmstad University,Halmstad,Sweden
2. H&E Solutions AB,Stockholm,Sweden
3. Institute of Informatics (INF), Federal University of Rio Grande do Sul,Porto Alegre,Brazil
4. Universitat Pompeu Fabra,Dept. of Information and Communication Technologies,Barcelona,Spain
5. Institute of Applied Informatics and Formal Description Methods, Karlsruhe Institute of Technology,Karlsruhe,Germany