  We investigate Tikhonov regularization methods for nonlinear ill-posed
problems in Banach spaces, where the penalty term is described by Bregman
distances. We prove convergence and stability results. Moreover, using
appropriate source conditions, we are able to derive rates of convergence in
terms of Bregman distances. We also analyze an iterated Tikhonov method for
nonlinear problems, where the penalization is given by an appropriate convex
functional.
