Karachentsev, I. D.; Kashibadze, O. G.. (2006).«Masses of the local group and of the M81 group estimated from distortions in the local velocity field»Astrophysics49(1): 3–18.doi:10.1007/s10511-006-0002-6.Bibcode:2006Ap.....49....3K..
Karachentsev, I. D.; Kashibadze, O. G.. (2006).«Masses of the local group and of the M81 group estimated from distortions in the local velocity field»Astrophysics49(1): 3–18.doi:10.1007/s10511-006-0002-6.Bibcode:2006Ap.....49....3K..