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| 1es-1959+650 (1) |
| bl lacertae objects: individual (1es 1959+650) (1) |
| energy (1) |
| gamma rays: galaxies (1) |
| gamma-ray astronomy (1) |
| large-area telescope (1) |
| mkn 501 (1) |
| multiwavelength observations (1) |
| radiation (1) |
| strong flares (1) |