P. Ranalli,
A. Comastri,
C. Vignali,
F. J. Carrera,
N. Cappelluti,
R. Gilli,
S. Puccetti,
W. N. Brandt,
H. Brunner,
M. Brusa et al. (3 more)
A&A, 555 (2013) A42
Published online: 27 June 2013
DOI: 10.1051/0004-6361/201321211
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