Maia, M. A. G.; da Costa, L. N.; Latham, David W. (April 1989). "A catalog of southern groups of galaxies". The Astrophysical Journal Supplement Series. 69: 809. Bibcode:1989ApJS...69..809M. doi:10.1086/191328.
Laurikainen, Eija; Salo, Heikki; Buta, Ronald; Knapen, Johan; Speltincx, Tom; Block, David (January 2006). "Morphology of 15 Southern Early?Type Disk Galaxies". The Astronomical Journal. 132 (6): 2634–2652. arXiv:astro-ph/0609343. Bibcode:2006AJ....132.2634L. doi:10.1086/508810.
Maia, M. A. G.; da Costa, L. N.; Latham, David W. (April 1989). "A catalog of southern groups of galaxies". The Astrophysical Journal Supplement Series. 69: 809. Bibcode:1989ApJS...69..809M. doi:10.1086/191328.
Laurikainen, Eija; Salo, Heikki; Buta, Ronald; Knapen, Johan; Speltincx, Tom; Block, David (January 2006). "Morphology of 15 Southern Early?Type Disk Galaxies". The Astronomical Journal. 132 (6): 2634–2652. arXiv:astro-ph/0609343. Bibcode:2006AJ....132.2634L. doi:10.1086/508810.