The ATESP 5 GHz radio survey - I. Source counts and spectral index properties of the faint radio populationI. Prandoni, P. Parma, M. H. Wieringa, H. R. de Ruiter, L. Gregorini, A. Mignano, G. Vettolani and R. D. EkersA&A, 457 2 (2006) 517-529DOI: https://doi.org/10.1051/0004-6361:20054273