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» Astrophysics 49 (1): 3–18. doi:10.1007/s10511-006-0002-6. Bibcode: 2006Ap.....49....3K..
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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» Astrophysics 49 (1): 3–18. doi:10.1007/s10511-006-0002-6. Bibcode: 2006Ap.....49....3K..