Seigar, Marc S.; Kennefick, Daniel; Kennefick, Julia; Lacy, Claud H. S. (2008-05-10). "Discovery of a relationship between spiral arm morphology and supermassive black hole mass in disk galaxies". The Astrophysical Journal. 678 (2): L93–L96. arXiv:0804.0773. Bibcode:2008ApJ...678L..93S. doi:10.1086/588727. ISSN0004-637X. S2CID118430417.
Seigar, Marc S.; Kennefick, Daniel; Kennefick, Julia; Lacy, Claud H. S. (2008-05-10). "Discovery of a relationship between spiral arm morphology and supermassive black hole mass in disk galaxies". The Astrophysical Journal. 678 (2): L93–L96. arXiv:0804.0773. Bibcode:2008ApJ...678L..93S. doi:10.1086/588727. ISSN0004-637X. S2CID118430417.
Garcia, A. M. (1993-07-01). "General study of group membership. II - Determination of nearby groups". Astronomy and Astrophysics Supplement Series. 100: 47–90. Bibcode:1993A&AS..100...47G. ISSN0365-0138.
Fouque, P.; Gourgoulhon, E.; Chamaraux, P.; Paturel, G. (1992-05-01). "Groups of galaxies within 80 Mpc. II - The catalogue of groups and group members". Astronomy and Astrophysics Supplement Series. 93: 211–233. Bibcode:1992A&AS...93..211F. ISSN0365-0138.
Righetti, G.; Giovannini, G.; Feretti, L. (1988-04-01). "WSRT observations at 327 MHz of the cluster A262". Astronomy and Astrophysics Supplement Series. 73: 173–179. Bibcode:1988A&AS...73..173R. ISSN0365-0138.
del Rio, M. S.; Cepa, J. (1998-12-01). "The nature of arms in spiral galaxies. III. Azimuthal profiles". Astronomy and Astrophysics. 340: 1–20. Bibcode:1998A&A...340....1D. ISSN0004-6361.
Seigar, Marc S.; Kennefick, Daniel; Kennefick, Julia; Lacy, Claud H. S. (2008-05-10). "Discovery of a relationship between spiral arm morphology and supermassive black hole mass in disk galaxies". The Astrophysical Journal. 678 (2): L93–L96. arXiv:0804.0773. Bibcode:2008ApJ...678L..93S. doi:10.1086/588727. ISSN0004-637X. S2CID118430417.
Seigar, Marc S.; Kennefick, Daniel; Kennefick, Julia; Lacy, Claud H. S. (2008-05-10). "Discovery of a relationship between spiral arm morphology and supermassive black hole mass in disk galaxies". The Astrophysical Journal. 678 (2): L93–L96. arXiv:0804.0773. Bibcode:2008ApJ...678L..93S. doi:10.1086/588727. ISSN0004-637X. S2CID118430417.
Garcia, A. M. (1993-07-01). "General study of group membership. II - Determination of nearby groups". Astronomy and Astrophysics Supplement Series. 100: 47–90. Bibcode:1993A&AS..100...47G. ISSN0365-0138.
Fouque, P.; Gourgoulhon, E.; Chamaraux, P.; Paturel, G. (1992-05-01). "Groups of galaxies within 80 Mpc. II - The catalogue of groups and group members". Astronomy and Astrophysics Supplement Series. 93: 211–233. Bibcode:1992A&AS...93..211F. ISSN0365-0138.
Righetti, G.; Giovannini, G.; Feretti, L. (1988-04-01). "WSRT observations at 327 MHz of the cluster A262". Astronomy and Astrophysics Supplement Series. 73: 173–179. Bibcode:1988A&AS...73..173R. ISSN0365-0138.
del Rio, M. S.; Cepa, J. (1998-12-01). "The nature of arms in spiral galaxies. III. Azimuthal profiles". Astronomy and Astrophysics. 340: 1–20. Bibcode:1998A&A...340....1D. ISSN0004-6361.
Seigar, Marc S.; Kennefick, Daniel; Kennefick, Julia; Lacy, Claud H. S. (2008-05-10). "Discovery of a relationship between spiral arm morphology and supermassive black hole mass in disk galaxies". The Astrophysical Journal. 678 (2): L93–L96. arXiv:0804.0773. Bibcode:2008ApJ...678L..93S. doi:10.1086/588727. ISSN0004-637X. S2CID118430417.