Burns, Jack O.; Hanisch, Robert J.; White, Richard A.; Nelson, Eric R.; Morrisette, Kim A.; Moody, J. Ward (1987-09-01). «A VLA 20 CM survey of poor groups of galaxies». The Astronomical Journal94: 587–617. doi:10.1086/114494. ISSN0004-6256. Bibcode: 1987AJ.....94..587B.
Burns, Jack O.; Hanisch, Robert J.; White, Richard A.; Nelson, Eric R.; Morrisette, Kim A.; Moody, J. Ward (1987-09-01). «A VLA 20 CM survey of poor groups of galaxies». The Astronomical Journal94: 587–617. doi:10.1086/114494. ISSN0004-6256. Bibcode: 1987AJ.....94..587B.
Burns, Jack O.; Hanisch, Robert J.; White, Richard A.; Nelson, Eric R.; Morrisette, Kim A.; Moody, J. Ward (1987-09-01). «A VLA 20 CM survey of poor groups of galaxies». The Astronomical Journal94: 587–617. doi:10.1086/114494. ISSN0004-6256. Bibcode: 1987AJ.....94..587B.