Burns, Jack O.; Hanisch, Robert J.; White, Richard A.; Nelson, Eric R.; Morrisette, Kim A.; Moody, J. Ward (1 Eylül 1987). "A VLA 20 CM survey of poor groups of galaxies". The Astronomical Journal. Cilt 94. ss. 587-617. Bibcode:1987AJ.....94..587B. doi:10.1086/114494. ISSN0004-6256.
Doe, Stephen M.; Ledlow, Michael J.; Burns, Jack O.; White, Richard A. (1 Temmuz 1995). "ROSAT Observations of Five Poor Galaxy Clusters with Extended Radio Sources". The Astronomical Journal. Cilt 110. s. 46. Bibcode:1995AJ....110...46D. doi:10.1086/117496. ISSN0004-6256.
Burns, Jack O.; Hanisch, Robert J.; White, Richard A.; Nelson, Eric R.; Morrisette, Kim A.; Moody, J. Ward (1 Eylül 1987). "A VLA 20 CM survey of poor groups of galaxies". The Astronomical Journal. Cilt 94. ss. 587-617. Bibcode:1987AJ.....94..587B. doi:10.1086/114494. ISSN0004-6256.
Doe, Stephen M.; Ledlow, Michael J.; Burns, Jack O.; White, Richard A. (1 Temmuz 1995). "ROSAT Observations of Five Poor Galaxy Clusters with Extended Radio Sources". The Astronomical Journal. Cilt 110. s. 46. Bibcode:1995AJ....110...46D. doi:10.1086/117496. ISSN0004-6256.
Burns, Jack O.; Hanisch, Robert J.; White, Richard A.; Nelson, Eric R.; Morrisette, Kim A.; Moody, J. Ward (1 Eylül 1987). "A VLA 20 CM survey of poor groups of galaxies". The Astronomical Journal. Cilt 94. ss. 587-617. Bibcode:1987AJ.....94..587B. doi:10.1086/114494. ISSN0004-6256.
Doe, Stephen M.; Ledlow, Michael J.; Burns, Jack O.; White, Richard A. (1 Temmuz 1995). "ROSAT Observations of Five Poor Galaxy Clusters with Extended Radio Sources". The Astronomical Journal. Cilt 110. s. 46. Bibcode:1995AJ....110...46D. doi:10.1086/117496. ISSN0004-6256.