GARCIA, A. General study of group membership. II - Determination of nearby groups. S. 47–90. Astronomy and Astrophysics Supplement [online]. Červenec 1993 [cit. 2020-03-02]. Roč. 100, s. 47–90. Dostupné online. Bibcode1993A&AS..100...47G. (anglicky)
FOUQUE, P.; GOURGOULHON, E.; CHAMARAUX, P., et al. Groups of galaxies within 80 Mpc. II - The catalogue of groups and group members. S. 211–233. Astronomy and Astrophysics Supplement [online]. Květen 1992 [cit. 2020-03-02]. Roč. 93, čís. 2, s. 211–233. Dostupné online. Bibcode1992A&AS...93..211F. (anglicky)
GARCIA, A. General study of group membership. II - Determination of nearby groups. S. 47–90. Astronomy and Astrophysics Supplement [online]. Červenec 1993 [cit. 2020-03-02]. Roč. 100, s. 47–90. Dostupné online. Bibcode1993A&AS..100...47G. (anglicky)
FOUQUE, P.; GOURGOULHON, E.; CHAMARAUX, P., et al. Groups of galaxies within 80 Mpc. II - The catalogue of groups and group members. S. 211–233. Astronomy and Astrophysics Supplement [online]. Květen 1992 [cit. 2020-03-02]. Roč. 93, čís. 2, s. 211–233. Dostupné online. Bibcode1992A&AS...93..211F. (anglicky)