Resolving the ionized wind of the post-red supergiant IRC +10 420 with VLTI/AMBER W. J. de Wit, R. D. Oudmaijer, M. A. T. Groenewegen, M. G. Hoare and F. Malbet A&A, 480 1 (2008) 149-155 Published online: 02 January 2008 DOI: 10.1051/0004-6361:20078773