Garcia, A. M. (1993). "General study of group membership. II. Determination of nearby groups". Astronomy and Astrophysics Supplement Series. 100: 47. Bibcode:1993A&AS..100...47G.
Li, W. -D.; Qiao, Q.; Qiu, Y.; Hu, J.; Armstrong, M.; Hurst, G. M.; Garradd, G. J.; Turatto, M.; Benetti, S.; Lemke, M. (1996). "Supernova 1996bo in NGC 673". International Astronomical Union Circular (6497): 1. Bibcode:1996IAUC.6497....1L.
Li, W. -D.; Qiao, Q.; Qiu, Y.; Hu, J.; Armstrong, M.; Hurst, G. M.; Garradd, G. J.; Turatto, M.; Benetti, S.; Lemke, M. (1996). "Supernova 1996bo in NGC 673". International Astronomical Union Circular (6497): 1. Bibcode:1996IAUC.6497....1L.