INTEGRAL Cross-calibration Status: Crab observations between 3 keV and 1   MeV
  We present results of Crab observations by the INTEGRAL instruments. A simultaneous fit allows us to demonstrate that INTEGRAL provides reliable spectra over its wide energy range. 
E. Jourdain, D. Gotz, N. J. Westergaard, L. Natalucci and J. P. Roques