β© π΅ π΅ π΅ βͺββ« High-Energy Astrophysics Collections β βͺπβ« Astronomy Texts β βͺπ-β« Floating High-Energy Astrophysics Texts β βͺπβ« HEASoft Texts β βͺπβ« Spectral Fitting Texts β βͺπβ« High-Energy Astrophysics Papers β Frank, King, & Raine 1985 β Accretion Power inβ¦ β¬π Shapiro & Teukolsky 1983 β Black Holes, Whiteβ¦ β¬π