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.
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.