X-ray spectra of PG quasars. II. The X-ray-ultraviolet excess of PG 1211+143
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| Description | scientific article published in January 1987 |
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author: Martin Elvis Bożena Czerny Jill Bechtold Giuseppina Fabbiano |
| Publication date | 1987 |
| Language | English |
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| Missing/wrong data? | Edit Wikidata item |