P. Fouque, E. Gourgoulhon, P. Chamaraux, G. Paturel: Groups of galaxies within 80 Mpc. II - The catalogue of groups and group members. In: Astronomy and Astrophysics Supplement. 93. Jahrgang, 1992, S.211–233, bibcode:1992A&AS...93..211F (englisch).
A. Garcia: General study of group membership. II - Determination of nearby groups. In: Astronomy and Astrophysics Supplement. 100. Jahrgang, 1993, S.47–90, bibcode:1993A&AS..100...47G (englisch).