Gamma-loud quasars: a view with BeppoSAX
  We present $Beppo$SAX observations of the $\gamma $-ray emitting quasars 0836+710, 1510-089 and 2230+114. All the objects have been detected in the PDS up to 100 keV and have extremely flat power-law spectra above 2 keV ($\alpha _x$=0.3--0.5). 0836+710 shows absorption higher than the galactic value and marginal evidence for the presence of the redshifted 6.4 keV Iron line. 1510-089 shows a spectral break around 1 keV, with the low energy spectrum steeper ($\alpha_l$=1.6) than the high energy power-law ($\alpha_h$=0.3). The data are discussed in the light of current Inverse Compton models for the high energy emission. 
F. Tavecchio, L. Maraschi, G. Ghisellini, A. Celotti, L. Chiappetti,   A. Comastri, G. Fossati, P. Grandi, F. Haardt, E. Pia...