1. University of Niš,Faculty of Electronic Engineering,Department Telecommunications,Niš,Serbia,18000
2. Hangzhou Dianzi University,College of Electronics and Information,Hangzhou,China,310018
3. University of Messina,Engineering Department,Messina,Italy,98166
4. University of Messina,MIFT Department,Messina,Italy,98166
5. University of Ferrara,Engineering Department,Ferrara,Italy,44122
6. University of Messina,BIOMORF Department,Messina,Italy,98125