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作者单位:M. Antonello (1) B. Baibussinov (2) P. Benetti (3) F. Boffelli (3) E. Calligarich (3) N. Canci (1) S. Centro (2) A. Cesana (5) K. Cieslik (6) D. B. Cline (7) A. G. Cocco (4) A. Dabrowska (6) D. Dequal (2) A. Dermenev (8) R. Dolfini (3) C. Farnese (2) A. Fava (2) A. Ferrari (9) G. Fiorillo (4) D. Gibin (2) S. Gninenko (8) A. Guglielmi (2) M. Haranczyk (6) J. Holeczek (13) A. Ivashkin (8) J. Kisiel (13) I. Kochanek (13) J. Lagoda (12) S. Mania (13) A. Menegolli (3) G. Meng (2) C. Montanari (3) S. Otwinowski (7) A. Piazzoli (3) P. Picchi (14) F. Pietropaolo (2) P. Plonski (15) A. Rappoldi (3) G. L. Raselli (3) M. Rossella (3) C. Rubbia (1) (9) P. Sala (5) E. Scantamburlo (11) A. Scaramelli (5) E. Segreto (1) F. Sergiampietri (16) D. Stefan (1) J. Stepaniak (12) R. Sulej (1) (12) M. Szarska (6) M. Terrani (5) F. Varanini (2) S. Ventura (2) C. Vignoli (1) H. G. Wang (7) X. Yang (7) A. Zalewska (6) A. Zani (3) K. Zaremba (15) P. Alvarez Sanchez (9) L. Biagi (17) R. Barzaghi (17) B. Betti (17) L.-G. Bernier (18) G. Cerretto (19) C. De Gaetani (17) H. Esteban (20) T. Feldmann (10) (21) J. D. Gonzalez Cobas (9) D. Passoni (17) V. Pettiti (19) L. Pinto (17) J. Serrano (9) P. Spinnato (1) M. G. Visconti (17) T. Wlostowski (9)
1. INFN 鈥?Laboratori Nazionali del Gran Sasso, Assergi, AQ, Italy 2. Dipartimento di Fisica e Astronomia e INFN, Universit脿 di Padova, Via Marzolo 8, I-35131, Padova, Italy 3. Dipartimento di Fisica e INFN, Universit脿 di Pavia, Via Bassi 6, I-27100, Pavia, Italy 5. INFN, Sezione di Milano e Politecnico, Via Celoria 16, I-20133, Milano, Italy 6. H.Niewodniczanski Institute of Nuclear Physics, Krak贸w, Poland 7. Department of Physics and Astronomy, University of California, Los Angeles, U.S.A. 4. Dipartimento di Scienze Fisiche e INFN, Universit脿 Federico II, Napoli, Italy 8. Institute for Nuclear Research of the Russian Academy of Sciences, prospekt 60-letiya Oktyabrya 7a, Moscow, 117312, Russia 9. CERN, European Laboratory for Particle Physics, CH-1211, Geneve 23, Switzerland 13. IInstitute of Physics, University of Silesia, Uniwersytecka 4, 40-007, Katowice, Poland 12. National Centre for Nuclear Research, A. Soltana 7, 05 400, Otwock/Swierk, Poland 14. INFN Laboratori Nazionali di Frascati, Via Fermi 40, I-00044, Frascati, Italy 15. Institute of Radioelectronics, Warsaw Univ. of Technology, Nowowiejska 15/19, 00 665, Warsaw, Poland 11. Universit脿 di L鈥橝quila, via Vetoio, Localit脿 Coppito, I-67100, L鈥橝quila, Italy 16. Dipartimento di Fisica e INFN, Universit脿 di Pisa, Largo Bruno Pontecorvo 3, I-56127, Pisa, Italy 17. DIIAR-Politecnico di Milano, Piazza Leonardo da Vinci 32, I-20133, Milano, Italy 18. METAS Federal Office of Metrology, Lindenweg 50, Bern-Wabern, Switzerland 19. Optics Division, INRIM (Istituto Nazionale di Ricerca Metrologica), Torino, Italy 20. Time Department, Real Instituto y Observatorio de la Armada (ROA), San Fernando, Spain 10. TimeTech, Stuttgart, Germany 21. Physikalisch-Technische Bundesanstalt (PTB), Bundesallee 100, D-38116, Braunschweig, Germany