A non-LTE radiative transfer model to study ionized outflows and disks. The case of MWC349A A. Báez-Rubio, J. Martín-Pintado, C. Thum and P. Planesas A&A, 553 (2013) A45 Published online: 30 April 2013 DOI: 10.1051/0004-6361/201219889