The M 81 group of galaxies: New distances, kinematics and structure
I. D. Karachentsev, A. E. Dolphin, D. Geisler, E. K. Grebel, P. Guhathakurta, P. W. Hodge, V. E. Karachentseva, A. Sarajedini, P. Seitzer and M. E. Sharina
A&A, 383 1 (2002) 125-136
DOI: https://doi.org/10.1051/0004-6361:20011741
