[1] Accademia Navale Livorno, I-57100 Livorno, Italy
[2] Aix Marseille Univ, CNRS, CPPM UMR 7346, F-13288 Marseille, France
[3] Univ Paris Diderot, CNRS, APC, CEA IRFU, F-75205 Paris, France
[4] Aristotle Univ Thessaloniki, Univ Campus, Thessaloniki 54124, Greece
[5] Eberhard Karls Univ Tubingen, Inst Astron & Astrophys, Sand 1, D-72076 Tubingen, Germany
[6] FOM, POB 41882, NL-1098 DB Amsterdam, Netherlands
[7] Friedrich Alexander Univ Erlangen Nurnberg, Erlangen Ctr Astroparticle Phys, Erwin Rommel Str 1, D-91058 Erlangen, Germany
[8] Friedrich Alexander Univ Erlangen Nurnberg, Sternwartstr 7, D-96049 Bamberg, Germany
[9] GSSI, Viale Francesco Crispi 7, I-67100 Laquila, Italy
[10] Hellenic Open Univ, Sch Sci Technol, Nat Sci, Sahtouri St Ag Andreou St 16, Patras 26222, Greece
[11] Univ Valencia, CSIC, IFIC, Inst Fis Corpuscular, C Catedrat Jose Beltran 2, Valencia 46980, Spain
[12] IN2P3, IPHC, 23 Rue Loess, F-67037 Strasbourg, France
[13] IN2P3, LPC, Campus Cezeaux 24,Ave Landais BP 80026, F-63171 Aubiere, France
[14] Ist Nazl Fis Nucl, CNAF, Vle C Berti Pichat 6-2, I-40127 Bologna, Italy
[15] Ist Nazl Fis Nucl, Lab Nazl Sud, Via S Sofia 62, I-95123 Catania, Italy
[16] Ist Nazl Fis Nucl, LNF, Via Enrico Fermi 40, I-00044 Frascati, Italy
[17] Ist Nazl Fis Nucl, Sez Bari, Via Amendola 173, I-70126 Bari, Italy
[18] Ist Nazl Fis Nucl, Sez Bologna, Vle C Berti Pichat 6-2, I-40127 Bologna, Italy
[19] Ist Nazl Fis Nucl, Sez Catania, Via Santa Sofia 64, I-95123 Catania, Italy
[20] Ist Nazl Fis Nucl, Sez Genova, Via Dodecaneso 33, I-16146 Genoa, Italy
[21] Complesso Univ Monte S Angelo, Ist Nazl Fis Nucl, Sez Napoli, Via Cintia Ed G, I-80126 Naples, Italy
[22] Ist Nazl Fis Nucl, Sez Pisa, Largo Bruno Pontecorvo 3, I-56127 Pisa, Italy
[23] Ist Nazl Fis Nucl, Sez Roma, Piazzale Aldo Moro 2, I-00185 Rome, Italy
[24] ISS, 242 Vacaresti, Bucharest 40061, Romania
[25] Univ Groningen, KVI CART, Groningen, Netherlands
[26] Leiden Univ, Leiden Inst Phys, POB 9504, NL-2300 RA Leiden, Netherlands
[27] Natl Ctr Nucl Res, PL-00681 Warsaw, Poland
[28] NCSR Demokritos, Inst Nucl & Particle Phys, Ag Paraskevi Attikis, Athens 15310, Greece
[29] NIOZ, POB 59, NL-1790 AB Den Burg, Netherlands
[30] N & K Univ Athens, Dept Phys, Athens, Greece
[31] Seconda Univ Napoli, Dipartimento Matemat Fis, Viale Lincoln 5, I-81100 Caserta, Italy
[32] Technol Educ Inst Pireaus, Thivon & P Ralli Str 250, Egaleo 12244, Greece
[33] TNO, Tech Sci, POB 155, NL-2600 AD Delft, Netherlands
[34] Univ Bologna, Dipartimento Fis Astron, Vle C Berti Pichat 6-2, I-40127 Bologna, Italy
[35] Univ Naples Federico II, Complesso Univ Monte S Angelo, Dip Sci Fis Pancini, Via Cintia G, I-80126 Naples, Italy
[36] Univ Pisa, Dipartimento Fis, Largo Bruno Pontecorvo 3, I-56127 Pisa, Italy
[37] Univ Roma La Sapienza, Dipartimento Fis, Piazzale Aldo Moro 2, I-00185 Rome, Italy
[38] Univ Politecn Cataluna, Ctr Tecnol Vilanova & Geltru, Lab Aplicac Bioacust, Avda Rambla Exposicio S-N, Vilanova a Geltr 08800, Spain
[39] Univ Politen Valencia, Inst Invest Gest Integrada Zonas Costeras, C Paranimf 1, Gandia 46730, Spain
[40] Univ Strasbourg, Univ Haute Alsace, GRPHE, 34 Rue Grillenbreit, F-68008 Colmar, France
[41] Univ Mohammed, Fac Sci, BV Mohammed VI,BP 717,RP 60000, Oujda 60000, Morocco
[42] Univ Amsterdam, Inst Phys IHEF, POB 94216, Amsterdam, Netherlands
[43] Univ Catania, Dipartimento Fis Astron Catania, Via Santa Sofia 64, I-95123 Catania, Italy
[44] Univ Genoa, Via Dodecaneso 33, I-16146 Genoa, Italy
[45] Univ Salerno, Via Giovanni Paolo II 132, I-84084 Fisciano, Italy
[46] Ist Nazl Fis Nucl, Grp Coll Salerno, Dept Phys, Via Giovanni Paolo II 132, I-84084 Fisciano, Italy
[47] Univ Wurzburg, Emil Fischer Str 31, D-97074 Wurzburg, Germany
[48] Univ Utrecht, Dept Phys & Astron, POB 80000, NL-3508 TA Utrecht, Netherlands