# Q75139414
**Wikidata**: [Q75139414](https://www.wikidata.org/wiki/Q75139414)  
**Source**: https://4ort.xyz/entity/q75139414


## References

1. SIMBAD
2. The Sloan Digital Sky Survey Quasar Catalog. I. Early Data Release
3. The Sloan Digital Sky Survey Quasar Catalog. II. First Data Release
4. The 2dF QSO Redshift Survey - XII. The spectroscopic catalogue and luminosity function
5. A strong redshift dependence of the broad absorption line quasar fraction
6. The SDSS Photometric Catalog, Release 7
7. The SDSS Photometric Catalog, Release 9
8. A catalogue of quasars and active nuclei: 13th edition
9. The Sloan Digital Sky Survey quasar catalog. V. Seventh data release
10. DA white dwarfs in Sloan Digital Sky Survey Data Release 7 and a search for infrared excess emission
11. Gaia Data Release 2