F. Aharonian,
A. G. Akhperjanian,
G. Anton,
U. Barres de Almeida,
A. R. Bazer-Bachi,
Y. Becherini,
B. Behera,
W. Benbow,
K. Bernlöhr,
C. Boisson et al. (149 more)
A&A, 499 3 (2009) 723-728
Published online: 29 April 2009
DOI: 10.1051/0004-6361/200811357
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