Based on observations with INTEGRAL, an ESA project with instruments and science data center funded by ESA member states (especially the PI countries: Denmark, France, Germany, Italy, Switzerland, Spain), Czech Republic and Poland, and with the participation of Russia and the USA.

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Available at http://isdc.unige.ch/index.cgi?Soft+download

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... $28\pm 4$ mCrab

1 mCrab $_{\rm 20{-}40\;keV} = 7.6\times10^{-12}$ erg cm^-2 s^-1; 1 mCrab $_{\rm 40-60\;keV} = 4.2\times10^{-12}$ erg cm^-2 s^-1, by assuming $F_{\rm Crab}(E)=9.6\cdot E^{-2.1}$ ph cm^-2 s^-1 keV^-1.

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