1. University of L’Aquila,A2VI-Lab,Department of DISIM,L’Aquila,Italy
2. University of L’Aquila,Department of DISIM,L’Aquila,Italy
3. University of Urbino Carlo Bo,Dept. of DiSPeA,Urbino,Italy
4. University of Salerno,Department of DISA-MIS,Fisciano,Italy
5. University of L’Aquila,A2VI-Lab,Department of MeSVA,L’Aquila,Italy