NGC 3628: Ejection activity associated with quasars H. Arp, E. M. Burbidge, Y. Chu, E. Flesch, F. Patat and G. Rupprecht A&A, 391 3 (2002) 833-840 Published online: 09 August 2002 DOI: 10.1051/0004-6361:20020828