Contributors

Contributors to version 2:

• Salvatore Filippone, Cranfield University, UK;
• Pasqua D'Ambra, IAC-CNR, Naples, IT;
• Daniela di Serafino, University of Campania ``L. Vanvitelli'', Caserta, IT;
• Ambra Abdullahi Hassan, University of Rome ``Tor Vergata'', IT.

Contributors to version 1:

• Salvatore Filippone;
• Pasqua D'Ambra;
• Daniela di Serafino;
• Alfredo Buttari, CNRS-IRIT, Toulouse, F.