1. Dipartimento di Scienza Applicata del Politecnico, Corso Duca degli Abruzzi 24, 10129 Torino, Italy
2. Departamento di Física, Universidade Estadual de Maringá, Avenida Colombo 5790, 87020-900 Maringá, Paraná, Brazil
3. University Politehnica of Bucharest, Faculty of Applied Sciences, Splaiul Independentei 313, 060042 Bucharest, Romania
4. National Research Nuclear University MEPhI (Moscow Engineering Physics Institute) Kashirskoye shosse 31, 115409 Moscow, Russian Federation