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| Paper: |
Optical identification of sources from the HELLAS2XMM survey |
| Volume: |
258, Issues in Unification of Active Galactic Nuclei |
| Page: |
205 |
| Authors: |
Fiore, F.; Matt, G.; La Franca, F.; Perola, G. C.; Brusa, M.; Comastri, A.; Mignoli, M.; Ciliegi, P.; Severgnini, P.; Maiolino, R.; Baldi, A.; Molendi, S.; Vignali, C. |
| Abstract: |
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