The Palermo Swift-BAT hard X-ray catalogue - I. Methodology A. Segreto, G. Cusumano, C. Ferrigno, V. La Parola, V. Mangano, T. Mineo and P. Romano A&A, 510 (2010) A47 Published online: 05 February 2010 DOI: 10.1051/0004-6361/200911779