TY  - RPRT
TI  - Spectral evolution of active galactic nuclei Penrose Compton scattering processes and gamma ray emission from Seyfert galaxies
AU  - Leiter, Darryl
AU  - Boldt, Elihu
PY  - 1990
UR  - https://ntrs.nasa.gov/citations/19900014001
ID  - 19900014001
ER  -