TY - JOUR AU - Lorenz, Dirk A. AU - Maass, Peter AU - Muoi, Pham Q. TI - Gradient descent for Tikhonov functionals with sparsity constraints: theory and numerical comparison of step size rules JO - Electronic transactions on numerical analysis PY - 2012 SP - 437 EP - 463 VL - 39 PB - mathdoc UR - http://geodesic.mathdoc.fr/item/ETNA_2012__39__a1/ LA - en ID - ETNA_2012__39__a1 ER -