A deep VLA survey at 6 cm in the Lockman Hole P. Ciliegi, G. Zamorani, G. Hasinger, I. Lehmann, G. Szokoly and G. Wilson A&A, 398 3 (2003) 901-918 Published online: 28 January 2003 DOI: 10.1051/0004-6361:20021721