Authors: POUTANEN J KROLIK JH RYDE F

Citation: J. Poutanen et al., THE NATURE OF SPECTRAL TRANSITIONS IN ACCRETING BLACK-HOLES - THE CASE OF CYG X-1, Monthly Notices of the Royal Astronomical Society, 292(1), 1997, pp. 21-25

Authors: RYDE F POUTANEN J SVENSSON R LARSSON S UENO S

Citation: F. Ryde et al., THE VARIABLE X GAMMA-RAY SPECTRUM OF THE SEYFERT-2 GALAXY NGC-7172/, Astronomy and astrophysics, 328(1), 1997, pp. 69-77