The Palermo Swift-BAT hard X-ray catalogue - I. MethodologyA. Segreto, G. Cusumano, C. Ferrigno, V. La Parola, V. Mangano, T. Mineo and P. RomanoA&A, 510 (2010) A47DOI: https://doi.org/10.1051/0004-6361/200911779