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.
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.