Did VV 29 collide with a dark Dark-Matter halo? F. H. Briggs, O. Möller, J. L. Higdon, N. Trentham and E. Ramirez-Ruiz A&A, 380 2 (2001) 418-424 Published online: 15 December 2001 DOI: 10.1051/0004-6361:20011362