R. B. Tully. The Local Supercluster. Astrophysical Journal. 1982, 257: 389–422 [2008-04-01]. (原始内容存档于2018-09-30).
I. D. Karachentsev, M. E. Sharina, A. E. Dolphin, E. K. Grebel, D. Geisler, P. Guhathakurta, P. W. Hodge, V. E. Karachentseva, A. Sarajedini, P. Seitzer. Galaxy flow in the Canes Venatici I cloud. Astronomy and Astrophysics. 2003, 398: 467–477 [2021-02-07]. (原始内容存档于2019-03-23).
R. B. Tully. The Local Supercluster. Astrophysical Journal. 1982, 257: 389–422 [2008-04-01]. (原始内容存档于2018-09-30).
I. D. Karachentsev, M. E. Sharina, A. E. Dolphin, E. K. Grebel, D. Geisler, P. Guhathakurta, P. W. Hodge, V. E. Karachentseva, A. Sarajedini, P. Seitzer. Galaxy flow in the Canes Venatici I cloud. Astronomy and Astrophysics. 2003, 398: 467–477 [2021-02-07]. (原始内容存档于2019-03-23).