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active galactic nuclei (1) |
background-radiation (1) |
bl lacertae objects (1) |
bl lacertae objects: individual (3c 66a) (1) |
bright blazars (1) |
epoch vlbi survey (1) |
galaxies: active (1) |
gamma rays: galaxies (1) |
large-area telescope (1) |
radio-sources (1) |