P., Fouque; E., Gourgoulhon; P., Chamaraux; G., Paturel (May 1992). «Groups of galaxies within 80 Mpc. II - The catalogue of groups and group members» (στα αγγλικά). Astronomy and Astrophysics Supplement Series93: 211. ISSN0365-0138. Bibcode: 1992A&AS...93..211F.
M., Garcia, A. (July 1993). «General study of group membership. II - Determination of nearby groups» (στα αγγλικά). Astronomy and Astrophysics Supplement Series100: 47. ISSN0365-0138. Bibcode: 1993A&AS..100...47G.
P., Fouque; E., Gourgoulhon; P., Chamaraux; G., Paturel (May 1992). «Groups of galaxies within 80 Mpc. II - The catalogue of groups and group members» (στα αγγλικά). Astronomy and Astrophysics Supplement Series93: 211. ISSN0365-0138. Bibcode: 1992A&AS...93..211F.
M., Garcia, A. (July 1993). «General study of group membership. II - Determination of nearby groups» (στα αγγλικά). Astronomy and Astrophysics Supplement Series100: 47. ISSN0365-0138. Bibcode: 1993A&AS..100...47G.