Richard Nolthenius: A revised catalog of CfA1 galaxy groups in the Virgo/Great Attractor flow field. In: Astrophysical Journal Supplement Series. 85, no. 1. Jahrgang, 1993, S.1–25, doi:10.1086/191753, bibcode:1993ApJS...85....1N.Joseph B.Jensen, John L. Tonry, Brian J. Barris, Rodger I. Thompson, Michael C. Liu, Marcia J. Rieke, Edward A. Ajhar, John P. Blakeslee: Measuring Distances and Probing the Unresolved Stellar Populations of Galaxies Using Infrared Surface Brightness Fluctuations. In: Astrophysical Journal. 583. Jahrgang, Nr.2, Februar 2003, S.712–726, doi:10.1086/345430, arxiv:astro-ph/0210129, bibcode:2003ApJ...583..712J.
Richard Nolthenius: A revised catalog of CfA1 galaxy groups in the Virgo/Great Attractor flow field. In: Astrophysical Journal Supplement Series. 85, no. 1. Jahrgang, 1993, S.1–25, doi:10.1086/191753, bibcode:1993ApJS...85....1N.Joseph B.Jensen, John L. Tonry, Brian J. Barris, Rodger I. Thompson, Michael C. Liu, Marcia J. Rieke, Edward A. Ajhar, John P. Blakeslee: Measuring Distances and Probing the Unresolved Stellar Populations of Galaxies Using Infrared Surface Brightness Fluctuations. In: Astrophysical Journal. 583. Jahrgang, Nr.2, Februar 2003, S.712–726, doi:10.1086/345430, arxiv:astro-ph/0210129, bibcode:2003ApJ...583..712J.
Laura Ferrarese, Holland C. Ford, Walter Jaffe: Evidence for a Massive Black Hole in the Active Galaxy NGC 4261 from Hubble Space Telescope Images and Spectra. In: Astrophysical Journal. 470. Jahrgang, 1996, S.444, doi:10.1086/177876, bibcode:1996ApJ...470..444F.
harvard.edu
ui.adsabs.harvard.edu
Richard Nolthenius: A revised catalog of CfA1 galaxy groups in the Virgo/Great Attractor flow field. In: Astrophysical Journal Supplement Series. 85, no. 1. Jahrgang, 1993, S.1–25, doi:10.1086/191753, bibcode:1993ApJS...85....1N.Joseph B.Jensen, John L. Tonry, Brian J. Barris, Rodger I. Thompson, Michael C. Liu, Marcia J. Rieke, Edward A. Ajhar, John P. Blakeslee: Measuring Distances and Probing the Unresolved Stellar Populations of Galaxies Using Infrared Surface Brightness Fluctuations. In: Astrophysical Journal. 583. Jahrgang, Nr.2, Februar 2003, S.712–726, doi:10.1086/345430, arxiv:astro-ph/0210129, bibcode:2003ApJ...583..712J.
Laura Ferrarese, Holland C. Ford, Walter Jaffe: Evidence for a Massive Black Hole in the Active Galaxy NGC 4261 from Hubble Space Telescope Images and Spectra. In: Astrophysical Journal. 470. Jahrgang, 1996, S.444, doi:10.1086/177876, bibcode:1996ApJ...470..444F.
