1. CNR-Institute for Complex Systems, via Fosso del Cavaliere 100, I-00133
Roma, Italy
2. Sincrotrone Trieste S.C.p.A., Strada Statale 14 Km 163.5, I-34149 Trieste,
Italy
3. University of Nova Gorica, Vipavska 11c, 5270 Ajdovscina, Slovenia
4. Physics Department and CENMAT, University of Trieste, Via Valerio 2, I-34127 Trieste,
Italy
5. Laboratorio TASC CNR-IOM, Strada Statale 14 Km 163.5, I-34149 Trieste,
Italy