UNNOFIT inversion of spectro-polarimetric maps observed with THEMIS V. Bommier, E. Landi Degl'Innocenti, M. Landolfi and G. Molodij A&A, 464 1 (2007) 323-339 Published online: 14 December 2006 DOI: 10.1051/0004-6361:20054576